Check the listing for details. 8pcs Valve Cover T-Bar Wing Bolts 1/4-20 Hold Down Length 5" for Chevy SBC BBC. Color: Silver, Condition: New other (see details). Listed at 21.99 USD. Description: Made of steel and chrome plated for beauty and durability 5/8" long thread for stock valve covers For fast and easy removal of valve cover Wing bolts are standard "Y" top bolts Fabricated of strong lightweight aluminum Sliver anodized finish Includes 8 per set with set screws. Specification: Color: Chrome Finish: Chrome Material: Steel Thread Size: 1/4"-20 Type: Bolt WARNING CA Proposition 65: Yes: Fits Chevy V8 Standard Y Top 1/4 in. 20 X 5/8 in. L Chrome Plated Steel Feature: Fits Chevy V8 Standard Y Top 1/4 in. 20 X 5/8 in. L .Description: Made of steel and chrome plated for beauty and durability 5/8" long thread for stock valve covers For fast and easy removal of valve cover Wing bolts are standard "Y" top bolts Fabricated of strong lightweight aluminum Sliver anodized finish Includes 8 per set with set screws. Specification: Color: Chrome Finish: Chrome Material: Steel Thread Size: 1/4"-20 Type: Bolt WARNING CA Proposition 65: Yes: Fits Chevy V8 Standard Y Top 1/4 in. 20 X 5/8 in. L Chrome Plated Steel Feature: Fits Chevy V8 Standard Y Top 1/4 in. 20 X 5/8 in. L .