Top tournament archers worldwide rely on the simple, strong and accurate design of Trophy Taker's spring steel series of rests. The Spring Steel 1 micro-adjust series accommodates the Spring Steel 1 blades which can be ordered in either narrow models (.2" wide) or wide models (.3" wide) to accommodate the smallest diameter shafts all the way up to large diameter line cutters. Each rest includes one blade (please specify narrow or wide and the blade thickness). Spring Steel 1 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 a 10-32 hex bolt. Rock solid all metal construction and precision machining equal a rest you can depend on. To micro-adjust, simply loosen an adjustment hex bolt and twist the micro knob to make precision adjustments.