Shimano Altus FC-M311 7/8 Speed Crankset with chaingaurd. These cranks pack in the ultimate bang-for-the-buck value. 12/1(50 3 A---*1809835(355-359 364)5/10 4/20(10:4/21 or 22 ari 4/22sp(20:4/28eta(12pcs:7/5ship) 72420(20:8/2b/o----1: rtn on 8/13---1RTN ON 12/10---1 rtn on 12/23 1/5 rtn:1 5/10(1) ** use:1809357a for c/guard & 1809355