1.Material: iron, brass, aluminum
2.Color: according to you need
3.Samples are free
4.High quality and competitive prices
5.prompt delivery time
6.Sizes and designs can be customized
7.Origin: Taiwan

Material : brass or steel Dimensions: Outer Diameter x Inner Diameter (Millimeter)
8 x4.5	9x5.3	10x6	12x7	13x4.5	13x8
15x9	16x10	17x10.8	17x8.5	19x10.2	19x11.5
21x14.5	23x13.4	25x14.2	28x16.9	30x17.3	32x18
34x21	38x23	60.5x40.5	61.5x42.5

If you can not find the size you need please contact us. We have much more sizes.