We offer this 12 point performance bolt upgrade kit for using TRICK FLOW heads with our 200-1032 Billet Aluminum Rocker Holddown kit. Normally rocker hold downs will use 6 short bolts and 4 long ones, however Trick Flow heads were re-designed to use all 10 short bolts. So, we have sourced the additional four 12 point bolts required, and we offer them as a separate kit which can be purchased to use our 200-1032 rocker holddowns with Trick Flow heads. Includes 4 bolts, use one package per engine. Washers are not included, they are supplied with the 200-1032.