5/32"(4 mm), 3/16"(4.8 mm), 7/32"(5.5 mm). 7/32"(5.5 mm) for saw wheel saw wheel such as big oil chain, 404 chain. 3/16"(4.8 mm) for small oil chain saw wheel, 325 chain, large 3/8 chain. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
eBay