Shank Diameter : 3.175mm;Total Size : 38 x 7.5mm / 1.5" x 0.3"(L*W)
Color : Silver Tone, Black;Weight : 42g
Package Content : 10 x PCB Drill Bits1 x Plastic Case
It has a large scraps discharge space, little resistance and smoothly during the scraps discharge.Use high quality materials and fine grinding process makes bit more sharp cutting edge, reduce cutting force and broken drill, improve the quality of hole wall.