The Stolen Silencer peg features a lightweight 6061 aluminum inner peg with durable nylon outer sleeve made from Stolen's proprietary Thermalite material. This Thermalite outer sleeve is designed to resist cracking and deformation and slides just as well, if not better, than chromoly pegs on most surfaces. Sold Individually. For replacement sleeves check out the Stolen Silencer Sleeve. Axle: 14mm w/ 3/8" adaptor Diameter: 1.6" (40mm) Length: 4.4" (112mm) Weight: 5.3 oz (Each)