sioux valve seat grinder stone set of 24 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 38mm (1.1/2") 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 ...
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