Description:The masonry drill bit has hard carbide tip, making it used fordrilling 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 orDIY. Specifications:Material: carbideQuantity: 15pcsColor: silverWeight: Approx. 427gBits Size and Quantity: 3mm 3pcs 4mm 3pcs 5mm 3pcs 6mm 2pcs 8mm 2pcs 10mm 2pcsPackage Includes:15 x masonry drill bits1 x blue plastic boxNote:Due to the difference between the monitors and light effect, thepicture may not reflect the actual colorof the item. Thanks for your understanding.