uxcell 4mm-4mm inner diameter universal joint wrench fastener screw silver tone L23 x D9 RC model 5 pieces

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.

Shaft fitting accessory for connecting two different shafts and rotating them together to transfer torque. Applicable to RC model cars, RC model boats, 3D printers, snow blowers, grinders and other DIY projects. Color: Silver Tone; Outer Diameter: 9mm; Inner Diameter: 4mm x 4mm; Length: 23mm; Fastener Screw: M4*0.7 The universal joint is made of 45# steel with an electroplated finish, making it sturdy and durable. With large transmission torque, high efficiency, stable transmission and small gap shock. When installing, first attach each of the coupling halves to the two connected shafts, then align, move, and adjust the shafts to the correct position. To ensure its full functionality, start installation within the maximum permissible eccentricity range.