The upper and lower are buoyancy tubes

and the becket can be removed by pulling it up and then removing the split pin

3 sensors mounted (glued) with 3M tape on the outside of your tank

Package dimensions: Dimensions: 14 cm × 18 cm × 26

Star Brite, Luksus børste blød BL133907 The upper and lower areStar Brite Luxury wash brush is designed with soft bristles, making it ideal for gentle boat cleaning. It has a rubber edge that protects the boat from scratches and impacts during use. Brand: Star Brite Weight: 0. 88 kg Type: Soft Made in: USA Package dimensions: Dimensions: 10 cm 20 cm 30 cm Gross weight: 0. 88 kg Wash brush with soft yellow bristles and a rubber edge that protects the boat from scratches impacts.