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Ammco / Coats (AMM8330)
Expander- Piston Ring, 3"- 4-1/4" (76.2 to 114.3mm)
Piston rings can be removed or installed without danger of breakage, distortion or other damage. There are no adjustments to make and step-cut or diagonal-cut rings are expanded with equal ease. Capacity: 3” to 4-1/2”.
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