HMT Versa Drive 7mm HSS Drill Bit 50mm Drilling Depth 209010-0070 - Orbital Fasteners
Rennie Tools - 50mm x 800mm Long SDS Max Hammer Drill Bit Tungsten Carbide Tip with Double Spiral Flute for Concrete, Stone, Masonry, Brick, Granite Etc : Amazon.co.uk: DIY & Tools