The Whisker Biscuit Quick Shot arrow rest holds your arrow safely, securely and at ready every time. The rest is lighter, more compact than ever before, but still incorporates a composite-encased biscuit that is 150% stronger than previous models. Reference marks for windage adjustment. Setup couldnt be easier. Just attach the Quick Shot to the mounting holes on your riser and it automatically aligns the arrow rest. Hand: Right or Left. Available: Small Inner dia: 0.300 in Arrow size: 17XX or Smaller Aluminum; Small Carbon Arrows; X, G, H Nocks Medium Inner dia: 0.320 in Arrow size: Internal Component Carbon; 19XX or Smaller Aluminum; S Nocks Large Inner dia: 0.395 in Arrow size: 23XX or smaller aluminum Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Capture Rests.