Product Description SDS Plus Core Bit, Size (In.) 2-1/2Drilling Length (In.) 2-13/16Application Masonry and Concrete Drilling, For Use With 45L425, 45L420, 45L417, 45L225, G5114085 From the Manufacturer Milwaukee's Core Bits are ideal for large hole drilling where depth is relatively shallow. The Core Bit cuts a kerf only. The usable depth of Thick Wall Core Bits is 4-3/8 inch. The inside core must be removed by the operator before deeper drilling can be accomplished. The Thick Wall construction is ideal for larger hammers and more seasoned/cured concrete. A 7-1/2 inch extension is available to allow for the deeper holes to be drilled. The appropriate (dependant on the diameter) SDS Plus Drive Shank must be used to drive the Core Bit. Use 48-20-6155 Center Pin and 48-20-6158 Guide Plate for positioning and starting the hole. Thin Wall Core Bits are available from 1 inch to 6 inch diameters. See Thick Wall Core Bits for cured concrete and/or larger hammers. Manufacturer: Milwaukee Country of manufacture: Japan Power Cutting & Sawing 2-1/2 in. diameter Usable cutting depth 3 in. Thin wall Use with SDS core bit shank 48-03-3555 (8 in.) or 48-03-3561 (12 in.) UPC 045242105359 ASIN B00004XPAG Model 48-20-5040 Brand Name Milwaukee Shank Type SDS-Max Unit Count 1 Count Item Weight 1 Pounds Point Style Spear Point Finish Types Uncoated Manufacturer Milwaukee Material Type Carbide Item Type Name Milwaukee Electric - SDS-PLUS THIN WALL CARBIDE TIPPED CORE BIT 2-1/2 Tool Flute Type Straight Cutting Diameter 2.5 Inches Number of Flutes 2 Included Components Unit^Instruction Guide Warranty Description Manufacturer Warranty Minimum Bore Diameter 2.5 Inches Surface Recommendation concrete, wall Global Trade Identification Number 00045242105359