Hole drill bits in 6 Sizes: The drill bits set contains 6 different drill bits and two guiding drills and an Hex key, encountering your need at different sizes of holes High quality: The drill bit set is made from high quality alloy steel and metal diamond With drills, drilling becomes convenient and easy Durability: With a diamond dust coating offers superior performance and cutting strength, extending the service life. This diamond drill bits are excellent for making clean and accurate hole Perfect Versatility: The hole drill set is versatile. Whether ceramic, tiles, clinker, brick, plasterboard, concrete or cement - the 6 different drill bits are suitable for all these materials Small Resistance: Small incision resistance, opening speed is quickly, easy removal of chips a help to open accurately. Type: Drill bits set Drill bits diameter: 22MM 28MM 35MM 44MM 68MM 73MM The hole drill set is versatile. Whether ceramic, tiles, clinker, brick, plasterboard, concrete or cement - the 6