Fit most SBC small block Chevy. 16 stud mounted roller rocker arms with 16 poly locks (what you see in the picture is what you'll get). Professional Installation is Highly Recommended (No Instruction Included). Application: --Fit most all small block Chevy stock and aftermarket 23 degree cylinder heads.Description: -- For Chevy SB 1.6 7/16, 16 CNC Stainless Steel Arms With Polylock Nuts --Creates less friction, allows more accurate valve adjustment and has extreme rigidity --Lightweight with integral push rod seat --Not self aligning --Fit most SBC small block Chevy --Full roller rocker Package: --16 stud mounted roller rocker arms with 16 poly locks (what you see in the picture is what you'll get) --Professional Installation is Highly Recommended (No Instruction Included). The item "1.6 7/16 Stainless Steel Roller Rocker Arms For Small Block Chevy SBC 350 400" is in sale since Saturday, July 22, 2017. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Rocker Arms & Parts". The seller is "demotorperformance" and is located in United States. This item can be shipped to United States, Canada, United Kingdom, Australia, Mexico, Germany, Japan, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Russian federation, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica.