Inner diameter: 7mm Length 20cm Quantity: 1 / Attach the tube according to the worm size. It fits the worm and has a small step, so it is not noticeable. Two types, cut type 2.5 and PRO that can be made to the desired length. Compatible worms: 4 (nekos rate 3.75, 5), 5 (nekos rate 5, 5.8), 6 (nekos rate 5.8, 6.5) Daiwa Bassers Worm Tub