10 Pcs 4.2mm High Speed Steel Drill Bits, Fully Ground 75mm Length Drill Bit Breakout Board Connectors no requirement for a tool

no requirement for a tool

Package Includes: 2Set x Hook Kit

Whether you are a professional or a beginner

and clear the chips from the hole frequently to avoid clogging

Screw Head Size:

10 Pcs 4.2mm High Speed Steel Drill Bits, Fully Ground 75mm Length Drill Bit Breakout Board Connectors no requirement for a toolThe product is made of high speed steel. Smooth surface finish, long service life. Suitable for wood, malleable iron, aluminum, plastic, etc. Great replacement for your dull drill bit to improve work efficiency. Straight shank design is more suitable for many electric drills (here is not included). Specification: Shank Type: Round Shank Tool Flute Type: Spiral Twist Drill Bits Diameter: 5. 5mm 0. 22 inch Material: High Speed Steel Shank Diameter: 5.