BPTL Drill Chuck Adapters are balanced by design and can also be supplied with tool holder coolant capability for specific taper types. BPTL Drill Chuck Adapters are manufactured in various 7/24 tapers, including BT (MAS403/JIS B 6339), DV (DIN 69871), CV (ANSI B5.50/ISO 7388), and HSK (DIN 69893). Drill Chuck Adapters is also available in the Dual taper contact design.