Yankee Hill Machine Nelson Piston 10mm 9/16x24 Steel. YHMs Nielsen Pistons are compatible with the YHM Booster Assembly YHM Sidewinder M2 suppressors and many popular pistol suppressors. YHMs Nielsen Pistons are constructed from heat treated 17-4 stainless steel for maximum durability and corrosion resistance. They also feature 10 adjustment points to zero any impact shift. Available in a variety of thread patterns to fit most firearms.Will work with Sidewinder M2 suppressors. NOTE: Not compatible with the original Sidewinder Specifications for Yankee Hill Machine Nelson Piston: Manufacturer: Yankee Hill Machine Color: Silver Threads per Inch: 9/16x24 Weight: 1.4 oz Features of Yankee Hill Machine Yhm Nelson Piston .10mm 9/16-24 Not compatible with original Sidewinder. Will work with Sidewinder M2 suppressors. Package Contents: Yankee Hill Machine Nelson Piston Yankee Hill Machine YHM-2062-24: Nelson Piston 10mm 9/16x24 Steel