This square drill bit is made of , which can withstand use. Features the carbon steel and alloy material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. This square drill bit will make the repair and fix easier and smoother. Features -Color:Yellow -Material:Carbon steel, alloy -Size:16.00X1.20X1.20cm/6.29X0.47X0.47in -Size:16.00X1.00X1.00cm/6.29X0.39X0.39in -Size:16.00X0.80X0.80cm/6.29X0.31X0.31in -Size:16.00X0.60X0.60cm/6.29X0.24X0.24in -Size:16.00X0.50X0.50cm/6.29X0.20X0.20in - Adopt sturdy carbon steel and alloy material, this drill bit kit is reliable and durable for long servicing time. - Matching of various specifications: This drill bit set contains drill bits of different specifications, which are suitable for different needs and are very practical and convenient. - Designed for fast and accurate drilling, saves your , various drill bits can meet different drilling accuracy. - Can be used in antique tile, foams tile, bubble tile, vitrified tile, ceramic tile, red brick, concrete, wood, plastic, marble and so on. - The appearance is simple, smooth and bright, and it can match your drill well, can use it with confidence. Package list: 1 x 5mm bit 1 x 6mm bit 1 x 8mm bit 1 x 10mm bit 1 x 12mm bit