The BladeRunner is designed for Stratocasters and Stratocaster clone tremolo guitars.The patented Blade technology of the BladeRunner provides measurable increase in sustain and tonal clarity.  This extraordinary gain can't be found in any other system due to the perfect relationship between the sustain block, the Blade, and the solid mount to the guitar body. The Blade works like an active conduit, transmitting a marked increase in sustain and tonal transparency through the body of the guitar.The patented Blade technology is honed from industrial grade spring steel - no matter how hard you work the whammy bar, your bridge will always return to the zero point, smoothly and effortlessly. The "Sustainium" block has been crafted from our proprietary grade billet alloy. This material was carefully chosen over many other materials for its noticeable sustain, tone and warmth.The whammy bar has an adjustable nylon tension screw in the tone block.  This will allow you to keep the whammy bar right where you need it, when you need it.Kit comes with claw, springs, mounting screws and adjustment wrenches.