Aifeier ET 4 Pcs 1/4"-20 Inch Knob Black Nylon Screw-On Type Thru

SizeFemale thread type: 1/4"-20; Female thread diameter: 1/4 inch; Head diameter: 1.50 inch/38mm; Total height: 0.51 inch/13mm. | Premium MaterialT track knob is made of high quality nylon and brass insert, durable, good toughness, strong anti-aging ability, smooth and beautiful, long service life. | Easy to ControlStar design, well-made, accord to ergonomic, comfortable to hold, non-slip without hurt the hand, and provides ideal grip, so that you have better control and precision. | ApplicationStar knobs nuts are widely used for lathe machine, mechanical equipment, instrument and apparatus, food and pharmaceutical industry equipment. It can be used in drill press, lathes, fixture, feather board and fences, and other places where 1/4 inch 20 female thread is needed. | Package Included4 1/4"-20 Star Knob Handle. Color: Black;