I ordered one of these last year. For some odd reason they sent me two instead of one. It's a decent stem. The shaft is chrome steel but the clamp is alloy.

~http://www.amazon.com/Dimart-Replacement-Bicycle-Handle-Silver/dp/B00PU7RJ3O/ref=sr_1_16?ie=UTF8&qid=1451842926&sr=8-16&keywords=dimart+stem