Sioux Valve Seat Grinding Wheels Set 24 Pcs With 11 Pcs Pilots + 2x Stone HolderGRINDING WHEELS 24 PIECE SET VITRIFIED BOND 80 GRIT MEDIUM. ALUMINIUM OXIDE PINK STONES 1" (25. 4mm) TO 2 1 2" (63. 5mm) STONE SIZES : 2. 1 2" 2 PCS, 2. 3 8" 2 PCS 2. 1 4" 2 PCS, 2" 2 PCS , 1. 7 8" 2 PCS, 1. 3 4" 2 PCS, 1. 5 8" 2 PCS, 1. 1 2" 2 PCS, 1. 3 8" 2 PCS, 1. 1 4" 2 PCS, 1. 1 8" 2 PCS 1" 2 PCS STONE THREAD 11 16" THESE STONES CAN BE DRESSED TO ANY ANGLE VALVE SEAT GRINDER PILOT 11 PIECE SET SET OF 11 PIECES ACCURATE SIZE Top . 385" SIZES AS