Horton EZ Crank III Cocking Device Fits Models: Hunter Max 200/175/150, SuperMax 175, Explorer TR 175, Explorer XL 150, Hunter XS, Hunter Express SL, Ultra SL, Supreme SL, Camotree SL, Realtree Expresscontinued Also Fits Models: EXP, Nitro Hunter, Hunter Elite, Hunter HD 175/150, Explorer HD 150, Team Realtree HD 175, and Legacy 225/200. Does not fit TRT Ultra-Lite or Legacy CS models. Designed for optimal safety Easier alternative to hand cocking your crossbow boost your bows performance by creating more uniform weight tension and an equalized limb load  ultimately boosting accuracy and overall bow performance.