I have three +/- 6 degree, 31.8mm stems in 8, 10, and 12 cm lengths that I bought to find the correct fit on a new bike. All are black generic aluminum stems, nothing special. If you're in a similar situation and want to test out different length stems to see what works, I'm willing to sell them together for $25 combined, free shipping continental USA. I'm also willing to accept a pair of used SPD pedals as a swap.