SDS DRILL BIT, HEAVY DUTY DRILL BIT : 400 mm working length, with this you can drill all common dowel holes. Drill bits with strong hardness to maximize durability; Cutting-edge design ensures better drill penetration; Perfect with electric hammer. STEEL DRILL BIT: The drill bit is made of high quality steel, durable and non-rusting. The tungsten carbide tipped drill bit head is harder, tougher, and more resistant to extreme loads; high-density drilling and fast waste removal. X-SHAPED HEAD: It features an innovative X-shaped geometry with a unique cross flute design for optimum disassembly and ease of use. Fully hardened drill bit with a double flute spiral for efficient waste removal. 2-HOLES SHANK: Round Handle two slots impact drill bit for regular drilling tools in Concrete, Granite, Stone. It provide optimum removal of dust & debris via rounded spiral geometry, more efficiently. APPLICATION, SIZE: Suitable for drilling holes in concrete, ceramic tile, stone, wood, metal, aluminium, plastic, concrete and multi-layer materials. 25MM diameter with 400MM working length and 450MM total length.