This wheel is a 9-8 x 1/2? convex wheel. It is made of durable plastic and has a black finish. It is perfect for use on a variety of machines, including sewing machines, embroidery machines, and other sewing and crafting machines.
This wheel is a DD9-9 x 1/2? CCW Concave. It is made of aluminum and is designed to fit most bicycles. It has a diameter of 9 inches and a width of 1.5 inches.