The TK-1 is a drop in replacement for most vintage style tremolo units. Some routing inside the spring cavity may be needed on certain models. Installation instructions and a template showing the necessary cutout is provided with each unit.

The TK-2 is designed for guitars that have a slanted single coil pickup mount on the bridge plate. The vibrato works exactly the same as the TK-1, but uses a different bridge plate. Routing of a spring cavity is necessary for installation.

The TK-3 is designed for other style solid and semi-hollow body guitars with no existing trem route. This model features a smaller footprint than traditional trems. The TK-3 functions the same as the other models.