This practical reversible kit by Prym makes it easier to turn fabric hoses such as straps or belt loops, making them a very useful sewing accessory. From the small belt loop to the wide bag handle, any self-made fabric tube can be turned effortlessly. The fabric tube is first sewn on only one side and then slipped over the plum blue plastic tube. With the enclosed wooden stick, the fabric can now be pushed through the tube from the sewn side and is automatically turned over. There are three sizes in the set: S for tunnel widths from 9.5 mm to 16 mm, M for tunnel widths from 19 mm to 25 mm and L for tunnel widths from 25 mm.