6061 T6 aluminum with Sulfamate nickel plated 50/54 Rc inserts . 86mm x 30mm on a 74mm BCD. These joint weight 211 grams and are designed for the 02002011 tripod joints. FSAE aluminum tri-pod housing , 6061 T6 aluminum with Sulfamate nickel plated 50/54 Rc inserts . 86mm x 30mm on a 74mm BCD. These joint weight 211 grams and are designed for the 02002011 tripod joints. IN STOCK