Item Type: Masonry Drill Bits Material: Cemented Carbide Product Specifications: 2Pcs 5mm Drill Bits 4Pcs 6mm Drill Bits 2Pcs 8mm Drill Bits 1Pc 10mm Drill Bit 1Pc 12mm Drill Bit Package List 10 x Masonry Drill Bits 1. There may be some errors in size2. Please try to keep the drill bit vertical and use cooling water to keep the drill bit cool3. Do not use on hard tiles 110PCS IN 1 SET: Including 10pcs screw cross masonry drill bits, with 5 different sizes, suitable for different drilling situations. 2CEMENTED CARBIDE: Made of excellent carbide material, with rustproof treatment and reinforced head to prevent the drill from cracking. 3CROSS DESIGN: Feature a precise and unique cross angle design on the ground spear tip that reduces skating and walking, greatly improving work efficiency. 4APPLICABLE MATERIAL: Suitable for glass, ceramics, tiles, mirrors, flower pots, wood, porcelain, brick wall, marble, thin iron plates, etc. 5HEX SHANK: These masonry twist drill bits have standard hex shank for easy mounting on hand tools and will not come off easily.