Product Descripion Features . Great replacement for your broken one with this knob. Widely used for lathe machine, mechanical equipment, instrument and apparatus, industry equipment Revolving Handles have an internal bearing that allows the handle to remain fixed in your hand, for firm gripping while turning a Hand Wheel or crank. Can be used for Milling Machine, Lathe, Grinding Machine and so on. Material: Metal Color: Silver Size: approx. M6 x 12mm or 0.47in x 85mm or 3.35in x 20mm or 0.79in(Thread Dia. x Thread Length x Handle Length x Thread Dia.) M8 x 10mm or 0.39in x 98mm or 3.86in x 23mm or 0.91in(Thread Dia. x Thread Length x Handle Length x Thread Dia.) M10 x 12mm or 0.47in x 100mm or 3.94in x 23mm or 0.91in(Thread Dia. x Thread Length x Handle Length x Thread Dia.) M12 x 10mm or 0.39in x 99mm or 3.90in x 23mm or 0.91in(Thread Dia. x Thread Length x Handle Length x Thread Dia.) Package list: 1pc x Revolving Handle Note: 1.Please allow 0.1-2cm error due to manual measurement. 2.The color may have different as the difference display, pls understand.