Pro Series 12 Point Head Stud Kit (234-4341) by ARP. Package Type: Box. Designed utilizing the latest technology, this product by ARP features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards. The engineers at ARP spent quite a bit of time developing these highly effective, unique oil pan studs. Theyre designed to make it as easy as possible to install a pan and seal it properly. Youll note that the studs have a radiused bullet nose that serves to locate the pan rails, then allow the nuts to be easily installed without the worry of cross-threading. For those who prefer bolts, ARPs got you covered, too.