Adjustable Drill Stop Collar Set, 7-Piece Sizes 1/8–1/2

This adjustable drill stop collar set gives fast, repeatable depth control for drilling tasks in wood, plastics, and metals. The 7-piece assortment covers common fractional sizes from 1/8 in to 1/2 in, letting you set precise hole depths across multiple bits without guesswork. Each collar installs quickly on the drill shank to help prevent breakthrough, protect work surfaces, and speed production and assembly work while maintaining consistent results.