These are the Axial Beadlock Monster Truck Wheels For Monster Trucks that use a 17mm Hex Adapter. FEATURES: Strong Super Composite Construction Black Chrome in Color Eight Hole Wheel Design Bead-Lock Type Tire Mounting Anodized Grey 6061 Aluminum Bead Lock Ring INCLUDES: Two 8-Hole Black Chrome Bead Lock Wheels Four Grey Aluminum Bead Lock Rings Forty-Eight 2mm x 10mm Socket Head Cap Screws Four 17mm Nylon Wheel Spacers One Instruction Sheet REQUIRES: Tires Tire glue DTXR2000, DTXR2002 SPECS: Outer Diameter: 102.21mm (4.024") Width: 82.14mm (3.234") Offset: 20.21mm (0.795") Hex Adapter: 17.00mm (0.669") JiM 11.09.06 ir/jxs