Item Type: Drill Bits Material: YG8 Hard Alloy Color: As shown in the picture 4MM Product Length: Approx.88mm / 3.46in 5MM Product Length: Approx.94mm / 3.70in 6MM Product Length: Approx.100mm / 3.94in 8MM Product Length: Approx.105mm / 4.13in 10MM Product Length: Approx.116mm / 4.57in Weight: Approx. 125g / 4.4oz Model: 4MM 5MM 6MM 8MM 10MM Application: Used for perforating ceramics, glass, ceramic tiles, concrete and wood. 1,Double rear angle design, incisive cutting head, rapid drilling and high efficiency. 2,Eddy current chip flute, smooth, high temperature resistant, non sticking to the knife. 3,The size models are clearly engraved on the round stem, making it easy to see. 4,Used for perforating ceramics, glass, ceramic tiles, concrete and wood. 5, YG8 hard alloy, durable in use and has longer service life.1. Please allow 1?2in error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1 x 4MM Drill Bit 1 x 5MM Drill Bit 1 x 6MM Drill Bit 1 x 8MM Drill Bit 1 x 10MM Drill Bite Note: 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. Sold by-Dadangjia