4 Sickspeed Spiked Valve Cover Set Engine Bay Dress Up Kit M6x1 24K/Gold for Acura Integra This is a set of 4 24k/gold Technidize&nbsp; finished spiked bolts Made from weapons grade billet aluminum. Spikes weigh in at 11 grams a piece spikes have a total length of 30mm(1.18") Will fit on any 6x1.00 threaded bolt.