SIOUX VALVE SEAT GRINDER STONE SET OF 12 PCS  WITH SIOUX STONE HOLDER 11/16" THREAD  STAR DRIVE BALL AND SHAFT. VITRIFIED BOND 80 GRIT MEDIUM.  ALUMINIUM OXIDE PINK STONES  25MM (1") TO 51MM (2.1/2") STONE SIZES :- 2.1/2" - 1 PCS, 2.3/8" - 1 PCS 2.1/4" - 1 PCS,  2" - 1 PCS ,  1.7/8" - 1 PCS,  1.3/4" - 1 PCS,  1.5/8" - 1 PCS,  1.1/2" - 1 PCS,  1.3/8" - 1 PCS,  1.1/4" - 1 PCS,  1.1/8" - 1 PCS 1" - 1 PCS STONE THREAD - 11/16" 1pc SIOUX HOLDER 11/16" THREAD STAR DRIVE with Ball THESE STONES CAN BE DRESSED TO ANY ANGLE BULK QUERY CONTACT US !