4 Pieces Metal Drill Bit Set with Hex Key Metal Drill Bit

Uses: Drill bit lock, drilling depth and work efficiency, drilling depth adjuster, drill bit depth stop collars Adjustable drill stop collar: The double-hole design provides stronger stability, locking the drill bit in place without deviation from the top, stop collar Drill stop collar: Drill rings are used as a shaft collar in machinery and can be used on twist drills or any type of drill bit for excessive drill bit penetration and for any work using a drill bit that requires precision, drill collar Woodworking drill locator: The drilling depth stop can be fixed on the drill bit at the depth of the drill hole to ensure the correct drilling depth, drill stop collar Drill stop collar: Its fine and creative appearance ensures its popularity and practicality, woodworking drill ring