Detachable Butt Plate: The Detachable Strainer Butt allows you to change your snare side head, but keeps the snare wire tension in its original state. Just loosen the two screws and detach the butt plate with the snappy snares still on. When you reattach tha butt plate, the snare wire tension will be restored to its original position and calibration. The Grooved Snare Side Hoop features an open frame for simpler operation.“Linear-Drive” Strainer (US.PAT.NO. 8017846): STARPHONIC’s strainer uses a “Linear-Drive” system, which we designed to provide greater control of the lever adjustment arm and more precise control of the strainer’s deployment motion. Even if you move the arm rapidly, you will not hear the typical “slap” of the wires hitting the bottom head. The strainer movement is designed to work in a true “linear motion”, similar to the motion found on “round sproket” drum pedals. Most strainers are not designed like this and tend to speed up right before the snare wires connect with the snare side head. Also, by tilting the angle of the butt plate 30 degrees, this design holds the snare wire cords or tape more firmly and reduces unnecessary pressure on the strainer and shell.Freedom Lug & Claw Hook (US.PAT.NO.7825318): By looseing the tension rods, you can tilt the claw hooks backwards and away from the Grooved Hoop. This quick release system offers simple, speedy replacement of drum heads without having to take all of the tension rods out of the lugs.Grooved Hoop (US.PAT.NO.7825318): The first factor we focused on to achive a new snare drum sound was the effect of hoop. So, we carefully studied the evolution of the hoop over time.In doing so, we came up with an idea that combines vintage design and modern technology. That idea is the essence of our totally new “Grooved Hoop.”Specifications: