Vlier NSC350 Swivel Pads; System of Measurement: Inch; Swivel Angle: 7.5 0; Thread Size (Inch): 5/8-11; Tip Material: Alloy Steel; Material: Alloy Steel; Pad Material: Delrin; Pad Diameter: 0.5060; Overall Length (Inch): 1; Thread Length (Inch): 5/8;