iTOOLS Diamond Disc Ø250 mm, G20 Medium floor Top Quality Discs at Budget-friendly Prices iTOOLS offers a selection of aggressive, efficient and durable sanding and grinding discs, which ensure that you can succesfully take on most sanding and grinding jobs. The discs are individually balanced for enhanced comfort with less vibration. This Ø250 mm disc is a G20 Medium Floor. Suitable for all common Ø250 machines, as CB12, CG81, Hoff and Blastrac BG 250.