1. The product material is aluminum alloy 2. The product can be used for water pipes with an outer diameter of 5mm and 7mm, according to the outer diameter of the water pipe on the RC ship 3, the product has 8 colors to choose from 4. After the product is put into the water pipe, it can play a certain waterproof role Material: aluminum alloy Parameters: as shown in the figure Color: red, orange, gold, green, purple, blue, black, silver Specification: 1 Piece