※ Available materials: marble / granite / cobblestone / microcrystalline stone / ceramic tile / red brick and other materials for drilling (you need to add water for cooling during use)
※ Prohibited to use: metal, tempered glass, wood, concrete
※ Compatible equipment: electric hand drill (hand electric drill: models with a power of 600W or more), Rechargeable drill (rechargeable drill: models that require high power above 48V)