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. Specifications: .904" Diameter 101g Weight 1.79" Seat Height 1.06" Oil Band Height .35" Oil Band Width. 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: AMC V8 290-401 Chrysler Small Block V8 273-360 Chrysler Big Block V8 B Series 383-440 ('58+) Chrysler Big Block V8 HEMI 426