KD Tools 1723 3-1/2\ to 6-1/2\" Piston Ring Compressor Features:
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\r\n- Use compressor to install pistons 3-1/2 to 6-1/2\"" (89 to 164mm) in diameter on trucks and tractors.
\r\n- Positive lock action provides positive compression and fingertip release.
\r\n- Heavy spring steel compresses the stiffest rings evenly.
\r\n- Tool is beaded along lower edge to prevent compressor from entering the cylinder.
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