Tekno front steering blocks for the Tekno RC M6 Driveshafts for Slash and Slash 4x4. Molded nylon composite for incredible strength and light weight. Added bump steer holes for better fine tuning the handling of your vehicle. Increased outer bearing size for increased durability.Note: These are meant to be used with the Tekno RC M6 (6mm) Driveshafts and stub axles. These are not a direct stock replacement unless you are using the M6 Driveshafts.