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@gbj_tester
110/44, powder coat and post-machined for 1×n drive
http://www.sjscycles.co.uk/thorn-110-mm-5-arm-reversible-single-chainring-3-32-inch-black-prod11053/
110/44 anodised and post machined for 2×n drive
http://www.dotbike.com/p/2143