Dial Test Indicator Stylus Case Type Case Compatible with Manufacturer Model No 2380-301 2381-301 Contact Point Material Steel Contact Point Shape Ball Contact Point Thread Size M1.6 x 0.35 For Use With Dial Test Indicator Includes Case Yes Number of Pieces 1 Overall Length 0.563 in Stem Dia 0.39 in Stem Thread Size M1.6 x 0.35 Contact Point Tip Diameter 1/32 in Contact Point Tip Length 9/16 in