GRAFF CORE BIT 3 1/4 Inch (82 mm) GRAFF core drill bit with SDS Plus Shank is perfect for construction work. The correct selection of the drilling tool of the required diameter ensures the quality of work and drilling. GRAFF core bit is also intended to prepare the space for installing sockets, flush mount sockets and switched sockets for electrical networks. The hole saw speeds and simplifies this construction work and ensure accuracy. ALL IN ONE Core drill bits for concrete are distinguished primarily by the material that adheres to the cutting edge of the cup. Materials provide the durability, performance, and quality of equipment. Made from quality tool steel, this 4-piece set consists of: Core bit 3 1/4 Inch (82 mm)SDS Plus Shank 110 mmCenter drill (10x110 mm)Screw GRAFF core bits are hard alloy tools with primary carbide teeth. Characteristics: Type: Core bit Working materials: concrete, hollow brick, red brick wall, cement wall, foam brick Diameter: 3 1/4" (82 mm) Shank: SDS Plus HOW TO USE GRAFF CARBIDE CORE DRILL BIT STEP 1 Switch to shockless mode. Place the drill in the center of the future hole. Start drilling until you get into the 5 mm wall. STEP 2 Take the center drill out of the core bit. STEP 3 Continue drilling to the required depth. SDS PLUS SHANK The SDS Plus is the most common type of shank used with hand-held lightweight rotary hammers. GRAFF core drill bit is very convenient to use. It has holes on the sides that help retrieve the concrete after drilling. GRAFF Speedcutter 4 ½" GRAFF Grinding Disc 4 ½" Curved GRAFF Termit 4 ½" GRAFF Saw Blade 4 ½" 24T GRAFF Black 4 ½" Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 8,348 4.3 out of 5 stars 149 4.6 out of 5 stars 558 4.5 out of 5 stars 938 4.4 out of 5 stars 1,440 Price $12.90$12.90 $10.90$10.90 $10.90$10.90 $5.90$5.90 $14.90$14.90 Working materials: Wood, aerated concrete, plasterboard, plastic, plywood, laminated flooring, parquet (hardwood), plasterboard, MDF(hardboard) and chipboard Wood, softwood, hardwood, chipboard, laminate, rubber, ice Wood, aerated concrete, plasterboard, plastic, plywood, laminated flooring, parquet (hardwood), plasterboard, MDF(hardboard) and chipboard Wood, softwood, hardwood, chipboard, laminate, MDF Sheet metal, rebar, stainless steel, aluminum, cast iron, metal pipes and profiles Diameter: 4 ½" (115 mm) 4 ½" (115 mm) 4 ½" (115 mm) 4 ½" (115 mm) 4 ½" (115 mm) Arbor: 7/8" (22.23 mm) 7/8" with 5/8" Adaptor ring 7/8" (22.23 mm) 7/8" with 5/8" Adaptor ring 7/8" (22.23 mm) Cutting thickness: 4 mm - no data 2 mm - no data 1.5 mm Maximum speed: 13 200 RPM 13 200 RPM 13 200 RPM 12 500 RPM 13 200 RPM