Porsche Sway-A-Way is now producing Racing Grade 12 drilled CV bolts for 930 CV’s. The socket head is drilled so that the bolts can be safety wired after installation. Each head has 6 holes in it so that the bolt can be wired correctly. The thread is 3/8-24 NF that is common in after market flanges. The 2 1/4″ long is used with stock width CV’s. The length are from the underside of the head to the end of the thread. They are black oxide plated and are sold in sets of 25.