Horton EZ Crank II Fits Models: Yukon 150, Yukon SL, SuperMag, Stag, Steeforce, Summit HD 150, Legacy 150, Scout 125 Lightweight and portable for in-field use. 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.