Kick-EEZ Sorbothane Recoil Inserts MEDIUM Kick EEZ Sorbothane recoil inserts provide maximum recoil reduction Can be used in any manufacturer's slip-on style recoil pad Available in 3 sizes for easy fitting. 2 inserts per package. MEDIUM fits 4 13/16" X 1 5/8" up to 5 1/8" X 1 3/4"