Features
-The O-ring remains in a fixed raised position, easy to attach clips. 
-Great for making dog leashes, pet collars, bag straps, belts, and device fasteners etc. 
-Each O-Ring has a wire diameter (thickness) of 5/32" (4.5mm)


Specifications:
Brand: WUTA
Name: Pure Solid brass O Ring 
Material: Solid Pure Bras
Color: as picture show.
Size (inner width:  4 size for choose, Inner diameter 40mm, Inner diameter 32.5mm, Inner diameter 26.5mm, Inner diameter 20mm


Package: 2pcs O ring 
Note：Manual measurement, there is error about 1mmThe pure brass will oxidize slowly,so after long time shipping, there maybe some small black spots, but it will disappear,and looks like antique brass after using for a time.or you could polish it with the sour vinegar.