Features: Made of brass, add weight for UTB18. Lower the center of gravity- of car, improve climbing-performance. For 1:18 Axial- UTB18 Capra. Direct replacement for factory plastic steering knuckles Portal Gear Cover. Heavy to add weight to vehicle for greater stability. Specifications: Material:Brass Type:Front Steering Knuckles,Outer Portal Cover-A,Outer Portal Cover-B,Rear Steering Knuckles Housing Front Steering Knuckles Size:Approx.37x40x20mm/1.4''x1.5''x0.8'' Outer Portal Cover-A Size:Approx.20x22.9x8mm/0.8''x0.9''x0.3'' Outer Portal Cover-B Size:Approx.20x22.9x8mm/0.8''x0.9''x0.3'' Rear Steering Knuckles Housing Size:Approx.28x32x50mm/1.1''x1.2''x1.9'' Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1Set Steering Knuckles Cover