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2 Packs Spring Plunger with Pull Ring, 1/2"- 13 Thread Size, 0.56" Thread Length, Stainless Steel Non-Locking Type Stubby Hand-Retractable Spring Plunger Index Plunger: Amazon.com: Tools & Home Improvement
Injection Moulding Ring Plunger Set
Piston Ring Compressor Tool Set for Car Engine - Vehicle