10pcs Piston Ring 50MM x 1.5MM For 038 Super, 038 SW, 038 FB K650 K700 Chainsaw Engine Rebuild Parts 1119 034 3000 Piston ring set designed to fit chainsaw models 038 Super, 038 SW, 038 FB, K650, and K700.This replacement part measures 50mm in diameter with a thickness of 1.5mm.The package includes 10 piston rings suitable for engine rebuilds.Each unit is inspected prior to consistent compatibility with specified. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.