The Mr Gasket 9818 Valve Cover T-Bar Wing Bolts are new, high-quality hardware designed for secure attachment of a valve cover. 1/4-20 3-1/2” High. Manufactured by Mr Gasket, these bolts are essential fasteners for engine maintenance and repair. Perfect for car enthusiasts looking to upgrade or replace worn-out valve cover bolts, these Mr Gasket bolts offer durability and performance.