Shanks, Extensions, & Reductions


Please note: We have decided to change our tool connection description of KA/KAB to CK/CKB to be consistent with how the product is referred to globally. There is absolutely zero geometric difference between a tool marked KA/KAB and CK/CKB, it was simply a way to differentiate North American inch tools from metric tools sold throughout the rest of the world.

Shanks, Extensions, & Reductions
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A Variety of Shanks, Extensions, & Reductions


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Smart Damper


  • BCV50 : CK4-CK6 Gauge Length: 11.576"-17.419"

  • BBT50 : CK4-CK6 Gauge Length: 9.921" - 14.960"

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CAT V Flange Shanks


  • CAT 40 : CKB1 - CKB6 Gauge Length: 1.496" - 5.630"

  • CAT 40 : CKN6 Gauge Length: 2.716"

  • CAT 40-BIG-PLUS® : CKB4 - CKB6 Gauge Length: 2.480" - 6.024"

  • CAT 40-BIG-PLUS® : CKN6 Gauge Length: 2.716"

  • CAT 45 : CKB4 - CKB7 Gauge Length: 2.716" - 3.611"

  • CAT 50 : CKB1 - CKB7 Gauge Length: 1.870" - 11.378"

  • CAT 50 : CKN6 - CKN7 Gauge Length: 2.716" - 3.268"

  • CAT 50-BIG-PLUS® : CKB4 - CKB7 Gauge Length: 2.716" - 11.378"

  • CAT 50-BIG-PLUS® : CKN6 - CKN7 Gauge Length: 2.716" - 3.268"

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Large Diameter Shanks


CAT 50 CKB7 - CKB8 Gauge Length: 8.661" - 13.110"


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CAT Shanks with Coolant Bores

  • CAT 40 CKB3 - CKB6 Gauge Length: 2.480" - 3.150"

  • CAT 50 CKB6 - CKB7 Gauge Length: 2.716" - 3.268"

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90° Orientation CAT 50


CAT 50 CKB6 - CKB7 Gauge Length: 2.716" - 5.079"

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BT Flange Shanks


  • BT 30 CKB5 Gauge Length: 1.496"

  • BT 30-BIG-PLUS® : CKB3 - CKB6 Gauge Length: 1.496" - 2.520"

  • BT 40 CKB2 - CKB6 Gauge Length: 1.811" - 3.700"

  • BT 40 : CKN6 Gauge Length: 2.402"

  • BT 40-BIG-PLUS® : CKB4 - CKB6 Gauge Length: 2.520" - 3.465"

  • BT 40-BIG-PLUS® : CKN6 Gauge Length: 1.811"

  • BT 45 CKB5 - CKB7 Gauge Length: 2.638" - 3.189"

  • BT 50 CKB4 - CKB7 Gauge Length: 2.835" - 3.780"

  • BT 50 : CKN6 - CKN7 Gauge Length: 2.835" - 3.386"

  • BT 50-BIG-PLUS® CKB4 - CKB7 Gauge Length: 3.661" - 4.646"

  • BT 50-BIG-PLUS® : CKN6 - CKN7 Gauge Length: 2.835" - 3.386"

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HSK Shanks


  • HSK-A25 : CKB2 Gauge Length: 1.181"

  • HSK-A32 : CKB2 Gauge Length: 1.299"

  • HSK-A40 CKB2 - CKB4 Gauge Length: 1.378" - 1.969"

  • HSK-A50 CKB3 - CKB5 Gauge Length: 1.732" - 3.700"

  • HSK-A63 CKB3 - CKB6 Gauge Length: 2.323" - 4.764"

  • HSK-A63 : CKN6 Gauge Length: 2.756"

  • HSK-A80 CKB6 Gauge Length: 2.953"

  • HSK-A100 CKB5 - CKB7 Gauge Length: 3.071" - 5.000"

  • HSK-A100 : CKN6 - CKN7 Gauge Length: 3.071" - 5.000"

  • HSK-E25 : CKB1 - CKB2 Gauge Length: 0.866" - 1.181"

  • HSK-E32 : CKB1 - CKB4 Gauge Length: 1.575" - 2.677"

  • HSK-E40 CKB1 - CKB4 Gauge Length: 1.240" - 1.969"

  • HSK-E50 CKB3 - CKB5 Gauge Length: 1.732" - 3.700"

  • HSK-E63 CKB6 Gauge Length: 2.756"

  • HSK-F63 CKB6 Gauge Length: 2.756"

  • COOLANT TUBES FOR HSK : A40/E40, A50/E50, A63, A100


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Adjustable Drill Holder



CAT40/50 CKB6 - Gauge Length: 2.716 " - 3.189"

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Coolant Induced Shanks



  • CAT V FLANGE 40, 50: CKB6 - CKB7 Gauge Length: 5.591" - 6.496"

  • BT FLANGE 40, 50: CKB6 - CKB7 Gauge Length: 5.472" - 6.496"


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CKB Reduction Adapters



  • MALE ADAPTER SIZES: CKB2 - CKB7 Gauge Length: 1.417" - 5.354"

  • FEMALE ADAPTER SIZES: CKB1 - CKB6 Gauge Length: 1.417" - 5.354"


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CKN Reduction Adapters


  • MALE ADAPTER SIZES: CKN7 Gauge Length: 2.992"

  • FEMALE ADAPTER SIZES: CKN6 Gauge Length: 2.992"

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CKB Extension Adapters



  • MALE ADAPTER SIZES: CKB1 - CKB7 Gauge Length: .787" - 6.299"

  • FEMALE ADAPTER SIZES: CKB1 - CKB7 Gauge Length: .787" - 6.299"


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CKN Extension Adapters



  • MALE ADAPTER SIZES: CKN6 - CKN7 Gauge Length: 2.362" - 6.299"

  • FEMALE ADAPTER SIZES: CKN6 - CKN7 Gauge Length: 2.362" - 6.299"

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CKN Double Connector Couplings

ADAPTER SIZES: CKN6 - CKN7 Gauge Length: 0" - 1.968"


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CKN Aluminum Extension Tubes



  • ADAPTER SIZES: CKN6 - CKN7 Gauge Length: 3.150" - 7.874"


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ER Collet Chuck Adapters


ADAPTER SIZES: ER25 (CKB1) & ER32 (CKB1 & CKB2)

BORING RANGE: ø.787"-1.850"