Specification: *Brand new and high quality* Quantity: 10pcs/set* Material: tungsten carbide* Cutting diameter: 10pcs 0.1-1.0mm 0.1mm/0.2mm/0.3mm/0.4mm/0.5mm/0.6mm/0.7mm /0.8mm/0.9mm/1.0mm10pcs 0.3-1.2mm 0.3mm/0.4mm/0.5mm/0.6mm/0.7mm/0.8mm/0.9mm/1.0mm/1.1mm/1.2mm* Cutting length: 12mm* Total length: about 38mm* Shank diameter: about 3.175mm(1/8")* Processing scope: SMT CNC PCB board, mold, plastic, copper, stainless steel and other precision metal parts.* The use of high-quality materials and grinding process makes that a bit more cutting edge, reduce the cutting force and broken drill bits, improve the quality of hole wall.Package content: 10 * PCB drills Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2.Please allow slight manual measurement deviation for the data.