Redcat Racing BS903-015 Left/Right Steering Knuckles (4MM)Uses 4mm screws, Please check thread size on your current screws.
Works with these models ONLY: BACKDRAFT 3.5,CALDERA 10E,CALDERA 3.0,CALDERA SC 10E,CALDERA XB 10E,EARTHQUAKE 3.0,EARTHQUAKE 3.5,REACTOR RS 3.3