The Trophy Ridge Whisker Biscuits are stronger than previous models. And, a rock-solid, dual-bolt mount and a set screw* for even more secure, "locked-down" mounting have been added. The Whisker Biscuit's design makes setup easier than before. Attach the Whisker Biscuit® to your riser mounting holes and it automatically lines up the arrow rest. And most models are designed for use with left and right hand bows. Its lightweight, compact design provides maximum clearance around quivered arrows. *Set Screw on Sure Shot Pro only. Features: Windage adjustment Composite-encased biscuit - 150% stronger than previous models Reference marks Custom rubber boots silence arrow loading Designed for use with left and right hand bows