Our copper saw blade adapter has 20 pieces in total, of 5 different sizes, quantity and sizes can meet your alternation demands, and you can also share with your friends. The saw blade adapter is a nice idea to give the stainless washer as a gift to your family and friends, who will to receive such practical presents. Size: 1 inch to 20 mm, 1 inch to 5/8 inch, 7/8 inch to 5/8 inch, 20 mm to 5/8 inch, 5/ 8 inch to 1/2 inch Package includes: 20 x Saw blades adapter rings Colour:silver Material:metal Package Contents: 1set x Saw blades adapter rings Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.