Model: ER11 A <br> Black Oxide Finish <br> Hardened & precision ground <br> Material:First class 40CR steel <br> Measurements: <br> Run-out tolerance 0.015mm <br> D: 19mm <br> L: 11.3mm <br> T: M14x0.75mm <br> <br> Package includes: <br> 2 x ER11 A type Clamping Nut