This is a rare, brand new high-quality Full Speed Ahead (FSA) Gossamer 175 mm 130/74 BCD Triple Mega Exo Crankset. All three chainrings are aluminum alloy. I have a 32-inch inseam, and I have decided that the crank arms are a bit too long for me. I was originally intending to install it on one my recumbent bikes and trikes. This crankset has a five-arm spider that uses standard size chain rings. I WILL BE UNABLE TO SHIP THIS UNTIL MONDAY, MAY 27TH.