Solid/Mechanical Flat Tappet Lifters (16)< ul>< li> Designed and manufactured using the tightest tolerances in the industry for ultra-precise construction< li> Oil metering band is milled to exact depth to prevent too much oil from being delivered to the top of the engine< li> Face of the lifter is ground to precise radius for proper break-in and guaranteed longer life Applications< ul>< li> Chrysler 6 Cylinder 170-255 Specifications .904" Diameter - 95g Weight - 1.63" Seat Height.