All of the features you love about the Stan Shootoff are built into the Stan Shootoff TL, except this one also has the training lock feature. That's what the TL stands for. You can install the training lock and then practice your release with your bow, or with a training aid, without actually releasing the string. You can squeeze the trigger, but the release will not activate. • Features Trainer Lock, a patent pending innovation from Stanislawski that allows for easy and safe training. Learn proper shot execution and build confidence in your technique before ever shooting an arrow! • Grooved handle with an aggressive sweep • Features the MPT2 knob, the first multi-positional thumb trigger, adjustable for projection, tilt and angle • Z-Tol - Tolerance Eliminating Technology • Features a wide range of trigger travel and tension adjustment without having to change a spring • silkpath™ Micro Adjustable Sears - The crispest and most accurate double sear system on the market • ErgoFit™ Technology - All STAN releases have a similar fit and feel • Designed to be used with a d-loop