Hot Leathers MPA2004 Cramp Buster Over-Sized Wide Throttle Cover Cramp Buster Over-Sized Wide Throttle Cover Comes in Over-Sized Wide and Is Made of Heavy-Duty Plastic. Slide It On... That's It! No Tools. The Cramp Buster Will Rotate Forward with Ease, Yet the Downward Pressure Is Applied By Your Hand, The Throttle Is Regulated Effortlessly And Accurately Without Squeezing. Features Made of Heavy-Duty Plastic Over-Sized Wide Slide On Install-No Tools or Mechanic Required Rotates Forward with Ease Downward Pressure is Applied by Your Hand Throttle Is Regulated Effortlessly And Accurately Without Squeezing for Those Long Road Trips