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Taper Rods & Rock Bits Fit Guide

Use the photos and listed dimensions to identify the connection, then view matching accessories.

1-800-241-9669

How to match drill steel, threads and bits →

Identify the connection. Choose the accessory.

1

Match the Drill Shank

Use the chuck size selected on your rock drill.

2

Choose the Drilling System

Keep H thread, rope thread, taper rods and plug bits in their own systems.

3

Choose Length & Diameter

Rods and replaceable bits are separate parts. Match the system before choosing sizes.

View Taper Rods & Rock Bits Find Accessories by Tool Model →

Compare A, B & C Series Shanks

A Series · 7/8" × 3-1/4" Hex Shank
A Series · 7/8" × 3-1/4" Hex
B Series · 7/8" × 4-1/4" Hex Shank
B Series · 7/8" × 4-1/4" Hex
C Series · 1" × 4-1/4" Hex Shank
C Series · 1" × 4-1/4" Hex
Replaceable-tip taper rod
Replaceable-tip taper rod
Cross carbide insert bit
Cross carbide insert bit
Button carbide insert bit
Button carbide insert bit
View Illustrated Guide & Full Comparison Charts

Visual identification & comparison

Taper Rods & Rock Bits Buyer’s Guide

All Buyer’s Guides →

Compare the illustrated shape, connection and listed dimensions.

Taper rods & bits

Taper Rods & Rock Bits — 35 options. Images identify the style; dimensions and part numbers distinguish the options.
Style / illustrationPart numberDimensions & connectionQuote
Button carbide insert bitButton carbide insert bitTB-125
Connection / fit
Button carbide insert bit
Bit diameter (inches)
1-1/4"
Details & Quantity →
Button carbide insert bitButton carbide insert bitTB-138
Connection / fit
Button carbide insert bit
Bit diameter (inches)
1-3/8"
Details & Quantity →
Button carbide insert bitButton carbide insert bitTB-150
Connection / fit
Button carbide insert bit
Bit diameter (inches)
1-1/2"
Details & Quantity →
Button carbide insert bitButton carbide insert bitTB-158
Connection / fit
Button carbide insert bit
Bit diameter (inches)
1-5/8"
Details & Quantity →
Button carbide insert bitButton carbide insert bitTB-175
Connection / fit
Button carbide insert bit
Bit diameter (inches)
1-3/4"
Details & Quantity →
Button carbide insert bitButton carbide insert bitTB-178
Connection / fit
Button carbide insert bit
Bit diameter (inches)
1-7/8"
Details & Quantity →
Button carbide insert bitButton carbide insert bitTB-200
Connection / fit
Button carbide insert bit
Bit diameter (inches)
2"
Details & Quantity →
Cross carbide insert bitCross carbide insert bitTC-125
Connection / fit
Cross carbide insert bit
Bit diameter (inches)
1-1/4"
Details & Quantity →
Cross carbide insert bitCross carbide insert bitTC-138
Connection / fit
Cross carbide insert bit
Bit diameter (inches)
1-3/8"
Details & Quantity →
Cross carbide insert bitCross carbide insert bitTC-150
Connection / fit
Cross carbide insert bit
Bit diameter (inches)
1-1/2"
Details & Quantity →
Cross carbide insert bitCross carbide insert bitTC-158
Connection / fit
Cross carbide insert bit
Bit diameter (inches)
1-5/8"
Details & Quantity →
Cross carbide insert bitCross carbide insert bitTC-175
Connection / fit
Cross carbide insert bit
Bit diameter (inches)
1-3/4"
Details & Quantity →
Cross carbide insert bitCross carbide insert bitTC-178
Connection / fit
Cross carbide insert bit
Bit diameter (inches)
1-7/8"
Details & Quantity →
Cross carbide insert bitCross carbide insert bitTC-200
Connection / fit
Cross carbide insert bit
Bit diameter (inches)
2"
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsAT-1
Connection / fit
AT series · 7/8" × 3-1/4" shank
Rod length · feet (inches)
1' (12")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsAT-1.5
Connection / fit
AT series · 7/8" × 3-1/4" shank
Rod length · feet (inches)
1'6" (18")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsAT-2
Connection / fit
AT series · 7/8" × 3-1/4" shank
Rod length · feet (inches)
2' (24")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsAT-3
Connection / fit
AT series · 7/8" × 3-1/4" shank
Rod length · feet (inches)
3' (36")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsAT-4
Connection / fit
AT series · 7/8" × 3-1/4" shank
Rod length · feet (inches)
4' (48")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsAT-5
Connection / fit
AT series · 7/8" × 3-1/4" shank
Rod length · feet (inches)
5' (60")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsAT-6
Connection / fit
AT series · 7/8" × 3-1/4" shank
Rod length · feet (inches)
6' (72")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsBT-1
Connection / fit
BT series · 7/8" × 4-1/4" shank
Rod length · feet (inches)
1' (12")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsBT-1.5
Connection / fit
BT series · 7/8" × 4-1/4" shank
Rod length · feet (inches)
1'6" (18")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsBT-2
Connection / fit
BT series · 7/8" × 4-1/4" shank
Rod length · feet (inches)
2' (24")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsBT-3
Connection / fit
BT series · 7/8" × 4-1/4" shank
Rod length · feet (inches)
3' (36")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsBT-4
Connection / fit
BT series · 7/8" × 4-1/4" shank
Rod length · feet (inches)
4' (48")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsBT-5
Connection / fit
BT series · 7/8" × 4-1/4" shank
Rod length · feet (inches)
5' (60")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsBT-6
Connection / fit
BT series · 7/8" × 4-1/4" shank
Rod length · feet (inches)
6' (72")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsCT-1
Connection / fit
CT series · 1" × 4-1/4" shank
Rod length · feet (inches)
1' (12")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsCT-1.5
Connection / fit
CT series · 1" × 4-1/4" shank
Rod length · feet (inches)
1'6" (18")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsCT-2
Connection / fit
CT series · 1" × 4-1/4" shank
Rod length · feet (inches)
2' (24")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsCT-3
Connection / fit
CT series · 1" × 4-1/4" shank
Rod length · feet (inches)
3' (36")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsCT-4
Connection / fit
CT series · 1" × 4-1/4" shank
Rod length · feet (inches)
4' (48")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsCT-5
Connection / fit
CT series · 1" × 4-1/4" shank
Rod length · feet (inches)
5' (60")
Details & Quantity →
Replaceable Tip Taper RodsReplaceable Tip Taper RodsCT-6
Connection / fit
CT series · 1" × 4-1/4" shank
Rod length · feet (inches)
6' (72")
Details & Quantity →

Not certain of the match? Call 1-800-241-9669 before ordering or using the accessory. Have your tool model and the chart’s part number ready.

Choose a Matching Accessory

Open an accessory to compare its listed sizes and part numbers.

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View All Part Numbers →
Button carbide insert bitCross carbide insert bitReplaceable Tip Taper Rods

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