A family decoration can be done, applicable: tile, brick, cement, concrete, glass, plastic, cinderblock, wood etc. TIPS 1. Recommended speed of drill set: 100-800 / MIN, the larger the diameter, the slower the speed requirement. 2. Do not knock when using, the workpiece must be fixed. 3. For products with large thickness, if there is abnormal chip discharge, please remove the debris in time. When the bit is overheated, the cooling effect is better. 4. The drill bit can be reused after grinding.
