good condition · SHIMANO SLX FD-M660-10 MTB BIKE FRONT GEAR MECH/DERAILLEUR WITH DUAL PULL 34.9MM VERY SIMILAR TO DEORE M590 · SHIMANO SLX DYNA-SYSTEM UPGRADED SPECIFICALLY DESIGNED FOR TRIPLE CHAIN WHEEL SYSTEMS UP TO 3X10 · WIDE LINK DESIGN FOR INCREASED RIGIDITY AND IMPROVED SHIFTING RESPONSE · CAN BE USED WITH UP TO 10-SPEED CASSETTE GEAR SYSTEMS · TOP-SWING (LOW DERAILLEUR BAND MOUNT) · FOR 42TEETH CHAIN WHEEL · 66/69 DEGREE · MAXIMUM CAPACITY 18 TEETH · TOP/MIDDLE DIFFERENCE 10 TEETH · CHAIN LINE 50MM · BAND SIZE 34.9MM · BLACK/CHROME FINISH · WEIGHT 150GRAMS (APPROX.)