Top tournament archers worldwide rely on the simple, strong and accurate design of Trophy Taker's spring steel series of rests. The Spring Steel 2 series accommodates the Spring Steel 2 blades. Each rest includes one blade (your must specify thickness when you order). Spring Steel 2 blades are available in .008", .010", and .012" thicknesses. Each blade fits tightly into a machined groove for precise launcher alignment and is then secured into place with two small hex bolts. Rock solid all metal construction and precision machining equal a rest you can depend on.