ARP Stainless Steel Header Bolt Kit - 12-Point - 5/16" Wrench - 3/8"-16 - 1.000" Length - Set of 12 31013BL This is the medium size

This is the medium size version with a 20 degree angle

Nose Screen

Includes two blue (80 durometer) poly bushings on the engine torque side and a single red (87 durometer) poly brake bushing

Packed 20 per pack / 10 packs per box (200 total)

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ARP Stainless Steel Header Bolt Kit - 12-Point - 5/16" Wrench - 3/8"-16 - 1.000" Length - Set of 12 31013BL This is the medium sizeARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12 point nuts. The Stainless 300 material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, thecompact 12 point nut lets you easily slip a socket close to the pipe. Each ARP accessory stud or bolt kit includes the specific number of parts for your