1、Manufacturing Material: Made of high quality PC and ABS materials, long service life, wear resistance and good durability, time saving, labor saving and worry saving. 2、Good Performance and Matching Effect: Products have undergone precise testing, so that accessories can achieve better matching effect, stable performance. 3、Waterproof Connectors: Ensure maximum durability in all weather conditions, and high performance wires and waterproof connectors ensure a low failure rate in long term use. 4、Universal on Both Sides: 30.5cm / 12.0in wire length, fitted with standard handlebars of 22.2mm / 8.7in diameter. 300X throttle shifter for bicycle lithium battery refit, common connector, universal on both sides. 5、Anti Impact and Comfortable Shape: Anti impact, comfortable shape design for several thumb positions, it can be installed without removing the grip, and it can be installed quickly. Item Type: 300X Thumb Throttle Weight: Approx.59g / 2.1oz Material: PC + ABS Waterproof Grade: IPX5 Connector: Waterproof Connector (3Pin Female Head)Wire Length: Approx.30.5cm / 12.0in Suitable Handlebar Diameter: Approx.22.2mm / 0.9in 1 x 300X Thumb Throttle