Aurora
Knightsbridge 85mm Holesaw Drill Bit Accessory Aurora HS85MM 85mm hole cutter
£18.72
https://www.bltdirect.com/ Go to shop Description
A 85mm holesaw drill piece that features Hardened HSS teeth. Bi-metal holesaws in common electricians and downlight cut-out sizes this doesn't include the Arbour.