3/16" (0.1875) diameter, 2-5/16" Flute Length. Zero-degree rake, a 90-degree point, and parabolic cutting flutes to drill through Plexiglas, and acrylic plastics without binding or "breaking out."
A 3 piece set of Titanium-Nitrate (TiN) coated step drills in the three most commonly used size groups. Cuts perfectly round holes in sheet metals, plastic, wood and other thin materials without center-punching.