3/7/13PCS Hex Shank Twist Drill Bit Set Wood Metal Hole Cutter Core Drilling Tool Cobalt Drill Bits 1.5 2 2.5 3 3.5 4 5 6mm HSS

【SPECIFICATIONS】
1.5, 2.0, 2.5, 3.0, 3.2, 3.5, 4.0, 4.5, 4.8, 5.0, 5.5, 6.0, 6.5mm with 1/4 hex shank.
✅【FULLY GROUND PROCESS & 135° SPLIT POINT】Fully ground spiral flute discharge scraps quickly, reduce friction and heat, therefore provides a faster, cooler and more efficient drilling performance; 135° Split Point with straight shank prevents slippage and makes drilling stable and precise. No center punch is needed.
✅【QUICK CHANGE】1/4" hex shank base well fits into majority pistol drill and drill press, more easily and securely installation without slippage and shedding.
✅【MULTIPLE APPLICATION】Small Drill bits for wood, plastic, steel plate(≤ 5mm) , aluminum alloy and other soft metals. Ideal choice for DIY projects, household maintenance and repair, NOT for glass, ceramic or concrete drilling.