Elftmann trigger vr80 pro se 3.5lb w/strait shoe red FEATURES:3.5 lb pull Threaded mounting system Double-Double torsion spring for hammerDrop-SafeFull power hammer spring Precision EDM wire cut hardened American tool steel Other Features: 3.5lb pull, proprietary threaded mounting system, drop safe, double-double torsion spring for hammer, lifetime guarantee, 100% drop-safe design, unique design of disconnect allows full 1/4" width eliminating wear or dbl firing