Products in Sale

Machines with 4" Stones

These stones will fit all older Sioux Valve refacers that have 4" stones.
$38.95

80 Grit Ruby Red General Purpose Valve Grinder Stone.
4" Diameter, 1" overall thickness with a 1/2" offset. 5/8" Hole Diameter Fits all older Sioux & Thor Valve Grinders that use a 4" Stone.

Fits Black & Decker and Van Dorn A, B, C, LW, M, MW, N, NW, NWA, and NWB Valve Grinders.
$36.95

60 Grit General Purpose Valve Grinder Stone.
4" Diameter, 1" overall thickness with a 1/2" offset. 5/8" Hole Diameter Fits all older Sioux & Thor Valve Grinders that use a 4" Stone.

Fits Black & Decker and Van Dorn A, B, C, LW, M, MW, N, NW, NWA, and NWB Valve Grinders.
$36.95

100 Grit General Purpose Valve Grinder Stone.
4" Diameter, 1" overall thickness with a 1/2" offset. 5/8" Hole Diameter

Fits all older Sioux & Thor Valve Grinders that use a 4" Stone. Fits Black & Decker and Van Dorn A, B, C, LW, M, MW, N, NW, NWA, and NWB Valve Grinders.
$36.95

80 Grit Pink Valve Grinder Stone for Stelite and Stainless Steel Valves.
4" Diameter, 1" overall thickness with a 1/2" offset. 5/8" Hole Diameter

Fits all older Sioux & Thor Valve Grinders that use a 4" Stone. Fits Black & Decker and Van Dorn A, B, C, LW, M, MW, N, NW, NWA, and NWB Valve Grinders.
$36.95

90 Grit General Purpose Valve Grinder Stone. 

4" Diameter,  1" overall thickness with a 1/2" offset. 5/8" Hole Diameter 

Fits all older Sioux & Thor Valve Grinders that use a 4" Stone.

Fits Black & Decker and Van Dorn  A, B, C, LW, M, MW, N, NW, NWA, and NWB Valve Grinders.
$21.04

54 Grit Stem Grinder Stone. 

4" Diameter,  Straight Cup style, 1" overall thickness with 5/8" Hole Diameter 

Fits All Sioux / Thor Model Valve Grinders Except 682 and 685L, KO Lee Model K500 and K403C
OEM Part Numbers: 75571VR2M89, 73533, RV4GQKMB

$36.95

60 Grit General Purpose Valve Grinder Stone. 

4" Diameter,  Straight Cup style, 1" overall thickness with 5/8" Hole Diameter 

Fits All Sioux Model Valve Grinders EXCEPT 682 & 685L

OEM Part Number: 81

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