GearWrench 82805D 2 Pc. 3/8” Drive Tap and Die Extension Adapter Set The GearWrench 82805D 2 Pc. 3/8” Drive Tap and Die Extension Adapter Set contains both the 82803D and 82894 extension adapters. The GearWrench 82805D 2 Pc. 3/8” Drive Tap and Die Extension Adapter Set’s 82803D features top mounted quick release button for ease of use, while the 82804 fits both the 3882 and 3883 tap adapters.