Features: Baby strollers wheel bearing cover ensures smooth operate of the strollers. Quality, wear-resistant, and long time use. Easy to install and disassemble. Perfectly compatibility with original pram cart, providing additional protections. Effectively prevent tire peeling and bearing breakage issue. Specifications: Component: Plastic Type: front, back(optional) Size: approx. 10.1cm/3.98inch Applicable Model: for Yoya/yoyo/yuyu baby strollers Package Includes: 1 Piece Baby Strollers Wheel Bearing Cover note: Do not include wheel !!! Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.