Retail 40X Hss Bit 0.6Mm-2.0Mm Straight Shank Pcb Twist Drill Bits Set 11X 75Mm S2 Steel Hex Torx Head Drill Screwdriver Set set2: 11 x Screwdriver Bit 10 x 0.6mm drill bit + 10 x 1.0mm drill bit + 10 x 1.5mm drill bit + 10 x 2.0mm drill bit1. Mini HSS Twist Drilling Bit Straight Shank Electrical Drill Tool.2.Twist Drill Metric Hss Drills Mini Drill Bits.3.Mini Mini HSS Twist Drill Bit Set 0.6mm-2.0mm Model Craft4.Straight Shank Twist Drill Bit. Suit for:PCB,Thin Aluminum/Iron Sheet,Thin plank,Plasticthis batch of head using S2 high quality steel, batch head surface for steel material color,from inside to outside are the same. Good material does not need to make the surface decoration throughthe exterior decoration, the quality of the batch is to look at the intrinsic material. Exquisite workmanship, each edge can be accurately locked screws, no damage to the screw,and the screwdriver head. Strong magnetic,can suck the screws easily when used it. Can be used for manual electric screwdriver, screwdriver, drill, air and other tools. Professional multi size package, hexagonal handle on the edge of 6.35mm.will damage screwdriver and the screw! Using the correct screwdriver bar,pay the less effort, and can easily unscrew the screws! Material:High Speed Steel/steelColor:SilverSize:8.5CMPackage Contents:11 x Screwdriver Bit10 x 0.6mm drill bit10 x 1.0mm drill bit10 x 1.5mm drill bit10 x 2.0mm drill bitOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.