High Speed Steel Twist Drill Bit, 4.2mm Fully Ground Black Oxide 75mm Long 10Pcs 2.5"OD-Straight-30" For audio equipment

For audio equipment

it is necessary to distinguish the positive and negative directions

5mm x 3mm (L*W)

For Hyundai Azera Limited Sedan 3

Voltage/Power: 380V 3

High Speed Steel Twist Drill Bit, 4.2mm Fully Ground Black Oxide 75mm Long 10Pcs 2.5"OD-Straight-30" For audio equipmentDescription: 1. Made of high speed steel, with great toughness and hardness, not easy to break, easy chip removal, the drill quenching treatment, improve the hardness of use. Surface black oxide treatment, not easy to rust. 2. This twist drill is proper for electric drill, hand electric drill and impact electric drill. Suitable for Stainless steel, iron, copper, aluminum alloys, wood, plastic drilling and carving. 3. Spiral flute design for quick