Performance Series Solid/Mechanical Flat Tappet Lifters with EDM Injection. Built to extreme precision tolerances to create the most durable Solid lifters available, the COMP Cams Performance Series Lifters are a premium lifter designed specifically for high-end street and race applications. Our Performance Series Lifters with EDM Injection Technology have all of the same high-quality features as our Performance Series Solid/Mechanical Lifters with the addition of the .012" EDM oiling hole on the lifter face.Precision-ground crown radius and surface finish promote performance Camshaft compatibility and high RPM durability. Lightweight design and one-piece Pushrod seat provide extended RPM range. Feature a precision-machined and accurately located oil band to yield a consistent and properly metered oil flow. Designed for elevated, Race application valve spring pressures. Ideal for high-end street and race engines. Includes full set of (16) lifters. Applications: Ford Small Block V8 302-351 Windsor ('69+), Small Block V8 Boss 302, 351C, 351M, 400M, Big Block V8 429-460. Specifications: .875" Diameter, 97g Weight, 1.95" Seat Height, 1.02" Oil Band Height, .54" Oil Band Width.