LEGO Part 44 Technic, Axle and Pin Connector Toggle Joint Smooth (Light Gray) | iBricktoys: LEGO shop guide and database
BrickLink - Part 56908c03 : LEGO Wheel 43.2mm D. x 26mm Technic Racing Small, 6 Pin Holes with Black Tire 81.6 x 44 R (56908 / 18450) [Wheel & Tire Assembly] - BrickLink Reference Catalog