The Samix SCX10 III/Capra Brass Portal Cover Combo Set combines SAMSCX3-4012A and SAMSCX3-4012B to create a full tuning package that improves the center of gravity and increases forward weight bias. These are compatible with the stock Axial knuckles, and can be combined with the optional Samix Portal Weights (SAMSCX3-4412) for even more weight down low. The complete package weighs 176 grams total, and is precision machined from high quality brass with a black coating that helps to prevent oxidizing.