These hardened, parallel-ground 1/2" ID chrome moly washers are ideal for distributing a compression load over more surface area than standard washers. The 1.30" OD is in between the 7/8" OD of AN960-816 washers and the 2" OD of AN970-8 washers. The 0.120" thickness is just a little thicker than a standard AN970-8 and almost twice as thick as a standard AN960-816. The ID is not chamfered (both sides are flat). Black oxide finish. Sold in pairs (pack of 2 washers).