Original Name / Part No.: AX30249 (RR10) / AX30429 (WRAIH, SMT10 MONSTER JAM)Part location: Hex adaptersProduct major functions & usage: Connect front CVD, rear drive shaft with wheels.Accessories:Hex Adapter 4pcsDelrin Ring 5x7x2.5 4pcsSteel Pin 2x10 4pcs5mm Metal Washer 4pcsStainless Steel Screw Shaft M3x11.5 4pcsStainless Steel Hex Socket Screw 14mm 4pcsShim 5x10x1 4pcsMajor advantages of upgrading to this part/product:1. Made with a good quality brass for great durability, with good weighing effect (12g each).2. Widen design increase the wheel track and minimize extra gap.Other special notes and comments:Thickness of hex: 17mm (11mm thicker than original)