Feature: 1. Surface antislip texture provides you with a comfortable grip and stable operating experiences. 2. The hexagonal screw is fixed to make the knob firm and not easy to loosen after long-term use. 3. There is an adjustment direction sign that allows you to accurately adjust the firepower. 4. Made of fine quality aluminum alloy, wear-resistant for long lifespan. 5. Easy to install and stable in use. Specification: This is a knob switch, which is made of aluminum alloy and is more wear0-resistant and convenient to use. Features: Surface antislip texture provides you with a comfortable grip and stable operating experiences. The hexagonal screw is fixed to make the knob firm and not easy to loosen after long-term use. There is an adjustment direction sign that allows you to accurately adjust the firepower. Made of fine quality aluminum alloy, wear-resistant for long lifespan. Easy to install and stable in use. Specifications: Color: black Material: aluminum alloy Item size: 36 * 36 * 16mm / 1.4 * 1.4 * 0.6in Item weight: 41g / 1.4ounce Package size: 40 * 40 * 20mm / 1.6 * 1.6 * 0.8in Package weight: 45g / 1.6ounce Packing List: 1 * Knob 1 * Screw 1 * Wrench Package List: 1 * Knob 1 * Screw 1 * Wrench