3/8” Apex Square Drive Bit-Holder, With Screw Clearance Description

Apex Fastener Tools formally Cooper Tools bit holders are made with high quality steel and are used throughout the aviation industry. With bit holders from Apex Fastener Tools, you get economy and flexibility. Apex brand products feature quality, select raw materials and only high grade tool steel. Each Apex brand tool is manufactured to the tightest tolerances in the industry. Closer tolerances mean a better fit and less cam-out or stripping, which in turn keeps work areas free of damage and reduces incidence of bit failure and costly re-work.