Boride Bench Stone Ali Oxide Brown/Orange 5/8 x 1 5/8 x 4 1/2" x 120/320 Grit 6558720 - 15° positive cutting rake

- 15° positive cutting rake angle with sharp edge

- To Suit BMW 5 SERIES E34 ALL TYPES EXCEPT M5 1988-1991 (Front)

Throat: 25mm (depth)

Copper core aids in heat removal

Pilot holes have been drilled on each side of the exhaust crossover for early or late model cylinder heads and will need to be drilled out depending on application

Boride Bench Stone Ali Oxide Brown/Orange 5/8 x 1 5/8 x 4 1/2" x 120/320 Grit 6558720 - 15° positive cutting rakeWith 2 grits back to back on the one stone. In silicon carbide as a sharpening stone and for ferrous materials above Rc35, and aluminium oxide which is a little less aggressive providing a smooth finish and for stainless steel and materials below Rc35. (Closely resembles the "India Stone"). Material: Aluminium Oxide Size: 5 8" x 1 5 8" x 4" Grit: 120 320