The rigid shaft coupling 5mm to 4mm 9/20mm from Modellbau Lindinger is an essential accessory for RC boats, providing a reliable connection between motors and ship shafts. This coupling is made from high-quality materials, offering a robust and durable solution for model building. It is equipped with set screws that ensure secure attachment and optimize the performance of the drive system. With a diameter of 5 mm, this coupling is versatile and suitable for various applications in model building. The scale of 1:90 demonstrates the attention to detail and precision that has gone into the manufacturing of this product. Made in China, the rigid shaft coupling meets the high standards expected by model building enthusiasts. This product is an ideal choice for anyone who values quality and reliability to optimally equip their RC boats.