Twist Drill Bit Set 99Pcs Titanium Coated HSS Drill Bits for Wood Plastic Soft Metal Aluminum Alloy 1-5mm-10mm

Specifications: Material: High Speed Steel 4241 (HSS4241) Surface Treatment: Titanium Coated Weight: 462g Application: metal, wood, plastic, PVC and handicraft industry drilling. Working principle: the round hole of the workpiece is drilled through the rotary cutting of its relative fixed axis. How to Use Twist Drill Bit Ensure the left and right cutting edges of the drill are symmetrical when drilling. Observe the uniformity of the spark while drilling, adjust the pressure in time, and pay attention to the cooling of the bit. Package Included: 16pcs 1.5mm Twist Drill Bit 16pcs 2.0mm Twist Drill Bit 15pcs 2.5mm Twist Drill Bit 10pcs 3.0mm Twist Drill Bit 10pcs 3.2mm Twist Drill Bit 8pcs 3.5mm Twist Drill Bit 8pcs 4.0mm Twist Drill Bit 3pcs 4.5mm Twist Drill Bit 3pcs 5.0mm Twist Drill Bit 2pcs 5.5mm Twist Drill Bit 2pcs 6.0mm Twist Drill Bit 2pcs 6.5mm Twist Drill Bit 2pcs 8.0mm Twist Drill Bit 2pcs 10.0mm Twist Drill Bit