• For 2013-down 41mm fork tubes, and 2014-later 49mm fork tubes.
• Urethane rings approx. 1/4" height each, fits snugly around tube. 
• Stack as many as you need to build front-end clearance between your lower tree and lower leg.  Easily covered with fork cans. 
• $49.99 pack comes with 30 rings, over 3.5" for each tube.  Or buy individual rings for $1.99 each if you know exactly how many you need.