Eastern phorcys sprocketthephorcysis a clean looking sprocket that is forged from 6061 alloy then cnc machined its a fantastic sprocket at a great price featuresmaterial forged from 6061 alloy then cnc machinedrounded tooth profile for increased life of the sprocket and chainsgreat sprocket at a great price18 teeth1516 bore with 19mm adapter includedweight 21ozrider level prosize 25t click here for crc warranty detailsbuyeastern phorcys bmx sprocketfrom chain reaction cycles t