PRODUCT DETAILS Click an item to expand and learn more Overview MINI Mill and Lathe Adjustable Tramming & Squaring System (1/4" Shank)1/4" Collet.Measurement Diameter is Fully Adjustable from 3 - 6 in.CNC Machined from 6061 Aluminum with a Protective Anodized Finish.1/4” Stainless Steel Center pin is 4 in. tall.Backed by SST Lifetime Warranty.Complete set includes two 1 in. Dial Indicators with .001” gradation with 0.25" stroke. Reviews Questions and Answers