Hot Leathers MPA2001 Cramp Buster Standard Size Throttle Cover Cramp Buster Standard Size Throttle Cover Comes in Standard 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 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