Description: The masonry drill bit has hard carbide tip, making it used for drilling holes in concrete, brick, stone, etc. It is mainly used for construction, industrial or DIY. Feature: Hard carbide tip for concrete, durable with high hardness. Drilling speed is twice that of standard masonry drills. With a slot storage box, convenient to carry and use. Used for drilling holes in bricks, cinder blocks and tiles. Professional drill bits, suitable for construction, industrial or DIY. Specifications: Material: carbide Quantity: 15pcs Color: silver Weight: Approx. 427g Bits Size and Quantity: 3mm 3pcs 4mm 3pcs 5mm 3pcs 6mm 2pcs 8mm 2pcs 10mm 2pcs Package Includes: 15 x masonry drill bits 1 x blue plastic box Note: Due to the difference between the monitors and light effect, the picture may not reflect the actual color of the item. Thanks for your understanding.