Milwaukee 48-20-5454 1-3/4 in. x 11-3/8 in. One Piece Spline
Archer USA 4 in. Diamond Turbo Core Drill Bit for Concrete Drilling TB400 - The Home Depot
Amazon.com: BOSCH HC8555 4 In. x 22 In. SDS-Max Rotary Hammer Core Bit Ideal for Applications in Masonry, Brick, Block, Concrete : Tools & Home Improvement
Archer USA 4 in. Diamond Core Drill Bit with V-Tip for Concrete Drilling VB400 - The Home Depot
1-1/4 inch Diamond Hole Saw Concrete Heavy Duty Gold Series – Drilax Tools
Amazon.com: 4-Inch Laser Welded Dry Diamond Core Drill Bit Hole Saw for Concrete and Asphalt, 4" Diameter x 11" Length: 0638361125607: DPT: Tools & Home Improvement