Tyrolit Diamond Core Drill Bit 52mm (2") x 450mm x 1 1/4 Wet Drilling | eBay
Stadea ADC107K Core Bit Adapter for Threaded Diamond Core Drill Bit Hole Saw -Series Super A - 1/2" Hexagonal to 1 1/4"-7 Male : Amazon.co.uk: DIY & Tools
1-1/2” Diamond Core Drill Bit 38mm Vacuum Brazed Hole Saw with Cutting Flutes for