A MUST have for preventing front end sag when using an ATV plow kit. Sold as a 4 pack to fit both front shocks.Made of tough rubber. For easier installation,release tension on coil spring. 8cm Long. 1" Center to center of each slot. Slots have 0.325" opening.9.1cm Long. 1.25" Center to center of each slot. Slots have 0.400" opening.