Replaceable steel plates for different shaft sizes The steel plates are replaceable to fit shafts of varying sizes. Includes three plate sizes so you can swap to match your workpiece diameter. Accurate, durable, and low wear Clear scale for precise adjustment of the rest position. Main body made from aluminum alloy for wear resistance and longterm readability of the scale. The combination provides stable, repeatable positioning during setup. Flexible adjustment with included tools Comes with installation tools and a wrench. Three sizes of steel plates can be replaced to suit different shaft dimensions. The adjustable design enables easy, quick finetuning to improve accuracy. Lightweight yet sturdy construction Aluminum alloy rest keeps the unit lightweight without sacrificing strength. Built for reliable, longlasting performance in demanding workshop use. Typical applications Lathe turning and facing: use as a stable rest to support cylindrical workpieces, improving alignment and reducing runout. Milling and grinding fixtures: position and hold cylindrical components accurately during precision machining. Assembly and inspection: align shafts and cylindrical parts in fixtures or inspection setups to ensure concentricity and proper fit.