About this item 4-pack disc brake alignment tool for rz800 & rz1000 this is a set of 4 high-quality disc brake alignment tool designed specifically for the cunfon rz800 and rz1000 electric scooters. Replacing worn pads with this set is a primary method to restore proper brake feel and adjust the disc brake clearance. Key features complete set: contains 4 disc brake alignment tool typically enough for both front and rear wheels . Precise fit for rz models: engineered to the exact specifications of the rz800 and rz1000 brake calipers for optimal performance and safety. Restores brake performance: replaces worn pads to regain strong, responsive braking power. Adjusts brake clearance: installing new pads of correct thickness is the fundamental way to set the proper gap between the pad and disc rotor. How it works & installation note brake clearance naturally increases as pads wear down. Installing these new pads resets that gap to the optimal distance. For installation, you will need basic tools to remove the wheel or caliper, and to push back the brake piston s to accommodate the new, thicker pads. Compatibility: designed specifically for the cunfon rz800 and rz1000 models. Please confirm your scooter model before purchase. Need help you can refer to the tutorial on the product page for usage instructions. If you encounter any difficulties and need assistance, please contact customer service.