This is a set of 50 small silicone float rubbers. The size is approximately 16mm in length, please check the photos. They are long, providing a sense of security. The applicable diameter for the float leg is about 1mm. The diameters of the three float legs in the photo are, from top to bottom: carbon leg 1.0mm, 1.2mm, and bamboo leg 2.0mm. In my opinion, carbon legs of 1.0mm to 1.2mm are the perfect size. Bamboo legs can also be set, but they don't go all the way in. They are quite tight, so the float shouldn't come out. Please understand that there may be a discrepancy of 1-2 pieces. Shipping will be via Nekopos, which offers compensation and tracking. Delivery is expected the day after shipping, even on weekends, for the Tohoku, Kanto, Chubu, and Kinki regions. Please note that returns and claims are not accepted.