Proform 66768 Piston Ring Compressor
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Limited 30 Day Warranty
Specifications
Type - Adjustable
Minimum Diameter (IN) - 4.205 Inch
Maximum Diameter (IN) - 4.31 Inch
Finish - Anodized
Color - Red
Material - Aluminum
Putting the connecting rod through first simply place the piston (with rings) into the tapered end of the ring compressor. Tighten the compressor snugly around the base of the piston. Then lay the compressor flat on the engine cylinder bore.