New CLEAN TRIALS brake pads! Developed and tested for many months by CLEAN TRIALS riders. The compound is made specifically for CLEAN TRIALS and trial use. The brake pad compound is glued into the familiar plastic "Power Pads" which are designed to have little play in the caliper so they move smoothly in the caliper when moving or braking. The plastic "Power Pad" body also absorbs vibration easily. These pads are designed for medium grinded rims!