!!! India's Best Selling Brand !!! !!! Known Through Its Quality & Performance !!! HEAVY DUTY SIOUX STYLE VALVE SEAT GRINDER STONE HOLDER THREAD 11/16 "  + 2 Pilots (Pilot Size :- 5/16" & 11/32") + Star Drive Cone  + 5 Pcs Stones.  1" 1-1/4" 1-1/2" 1-3/4" 2" Having 46 Years of Experience in manufacturing Nozzle Testers, Test Bench Tools and Spares, Injector Extraction and Reconditioning Tools, Dresser Stands, Valve Seat Cutters, Tool tip, boring gears (Van Norman & All types of Boring Machines parts), Tool Holders, Honing Machines, Ridge Cutters and all types of Garage & Calibrating Equipment.