Product Description ARP HEAD STUDS STUD KIT FOR HONDA/ACURA B18A/B B20B w VTEC HEAD LS-VTEC 208-4306 High Strength 8740 material Heat treated and centerless ground prior to machining 200,000 PSI Tensile Strength Trusted worldwide for reliable, consistent quality and performance (((( NOTE: FOR USE WITH VTEC CYLINDER HEADS ONLY ))))