Earl's Swivel-Seal Straight -12 AN Hose to -12 AN Female - Blue/Red Straight Fittings These regulators are perfect for

These regulators are perfect for naturally aspirated or blow-through supercharged engines

tray will require trimming for proper fit

Inside tang to taper relationship held tightly for repeatable valve spring installed heights

high quality product

Earl's Swivel-Seal Straight -12 AN Hose to -12 AN Female - Blue/Red Straight Fittings These regulators are perfect forEarl's Swivel Seal Hose Ends may be used with Perform O Flex, Auto Flex or Ruff Stuff stainless braided hoses. The Swivel Seal has a cutter style end, used for over 40 years in the aerospace industry, and 20 years in automotive competition. During assembly of cutter style fittings, the end cuts into the hose, creating a tight, leak proof seal. The finest design of hose ends available, Earl's Swivel Seal hose ends feature adjustability, for indexing