Brass Currie F9 Portal Steering KnuckleDetails: Hot Racing heavy duty brass steering knuckles (steering blocks) for the Axial UTB Currie F9 and SCX10 III Portal axles. Add weight to your crawler where it needs it down low. Adds about 132g (4. 66oz) to each side. Features: CNC Machined Solid Brass Heavy to Add Weight to Vehicle for Greater Stability and Lower CG High Strength Steel Hardware Direct Replacement for Factory Plastic Steering Knuckles