This is the Brake Yoke w/Pins for the Traxxas Revo. It is use on the Center/Front Driveshaft Assembly. FEATURES: Plastic Brake Yoke Steel Brake Pins(each knurled on one end) Steel Screw Pins INCLUDES: One Brake Yoke Two Brake Pins One Screw Pin REQUIRES: Assembly to the vehicle SPECS: Brake Yoke Outer Diameter: 18.5mm (.73") Brake Yoke Center Key Size: 4mm x 6mm (.17" x .24") Brake Yoke Length: 24mm (.95") Screw Pin Size: 4mm x 15mm (Threaded length-5mm) Brake Pin Size: 3mm x 20mm (.12" x .8") COMMENTS: Brake Yoke Center is "keyed" to have a positive fit to the shaft.