Description:With large chip removal space, the mini drill bit has small chip removal resistance, smooth chip removal. Drilling heat is small, reducing drilling pollution. There are many kinds of drill bits, which can meet different application requirements.The cutting edge of the drill is sharp, which can reduce the cutting force, lower the rate of broken drills, and improve the quality of the hole wall. Comes with a high quality blow molding storage box, twist drills in every sizes have their own slot.Made of premium carbon steel material, this drill bit set is durable and strong.There are 10 specifications of drill bits from 0.3 to 1.2mm, 0.1 to 1.0mm.The mini PCB drill bits can be used for plastic, steel, aluminium, copper and brass, jewelry.Item Name: Drill BitMaterial:Carbon SteelDrill Specifications: 1 0.3-1.2mm, 2 0.1-1.0mmSize Details:Single Drill Bit Size: 3.3cm x 0.3cm/1.3" x 0.12" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:10 X Drill Bits