Description Universal drill set of tungsten carbide multi-purpose drill bits with patented 4-step profile for quick drill removal. Diamond cut carbide plate with extra sharp blades for rotary drilling in tiles, masonry, metal, wood and plastic. Fits any standard cordless screwdriver due to standardised shaft profile. Specifications: drill type (categorization): multipurpose drill set Contents: 1 set Material (drill): carbide Material suitability: wood, metal, plastic, brick, tile tool holder (drill): 1/4” (6.3 mm) Package includes: multi-purpose drill diameter 4/5/6/8/10 mm. Note: Only use rotating without impact!