Specifications The rubber compound is made of high quality rubber, The size of the thick rubber paddle is 1.9 inches W 4.9 inches L, with a minimum tensile strength of 725 PSI 5 MPA. The metal band is approimately 1.3 inches wide 3.7 inches long.Bolts and Locknuts He bolts are 51618 1 inch coarse threaded with 51618 locking nuts install with 12 inch wrench and socket. The package also includes 9 selflocking screws, all screws are made of high quality metal materials.Function This snow thrower impeller conversion kit reduces the eisting gap between the snow thrower impeller blade and the impeller chamber wall. The smaller the gap, the higher the machines operating efficiency and snow throwing capacity, and the less likely the machine will become clogged with snow.Note Before ordering, make sure the part number on your new replacement unit matches your old unit.Color As shownMaterial Metal RubberSize Thickness 38 inchPackage contents3 rubber paddles3 metal bands9 bolts and lock nuts9 selftapping screwsOnly the above package contents, other products are not included.Note Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is 13 cm.