1、Fitment: Bucket pin shim kit is fit for various small heavy equipment, such as replacement for Case CX31; replacement for CAT 303.5; please confirm whether your model is applicable before buying. 2、Versatile: Multiple gaskets tighten loose joints, thereby preventing loss of grease, increasing grease spacing, and preventing dirt from entering the bucket pins. 3、More Stable Equipment: Bucket pin shims tighten loose joints, from the bucket to the boom, improving the overall stability and performance of the equipment. 4、Wear Resistant: Bucket pin shim is made of the hardest and strongest engineered polymer, with low friction and high wear resistance, reducing friction loss and extending service life. 5、Prevent Dirt Spilling: The most worn pins are the ones closest to the dirt, and the bucket shims stop dirt spilling into the bucket pins, protecting against contamination and wear.