Hot Leathers MPA2002 Cramp Buster Over-Size Throttle Cover Cramp Buster Over-Size Throttle Cover Comes in Over-Size 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 Size 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