Exterior Contractor Product Guide

Tin-coated UNIBIT step drill

American Tool Companies UNIBIT Titanium Nitride (TIN) Coated step drills, manufactured to save contractors time on the jobsite and offer long-life performance, feature a tin coating designed to reduce friction and ensure lower cost-per-hole drilling. They are available in six standard sizes up to 1 3/8 in. and five metric sizes up to 35mm.