SSD Challenger PL 2.2" Beadlock Crawler Wheels. Features: Standard 2.2" wheel size CNC machined aluminum main wheel, hub and front ring Black & Blue anodizing CNC machined blue delrin inner ring Internal beadlock system Designed to fit Proline 2.2 tires Easy to mount tire, only 6 screws Standard 12mm hex mount Also fits Axial 12mm hex Removable hub Compatible with Vanquish SLW hubs Specially made scale steel hex head bolts with yellow zinc plating (SSD00028) NOTE: Scale hex bolts may need to be tightened or threadlock before use. Specifications: Wheel width: 37.75mm Tire bead width: 33.25mm Offset: +1.1mm Backspacing: 17.5mm Weight: 93g Includes: (2) Complete assembled wheels