Ritchey WCS C220 for £25 plus the postage? 220 degree clamp. I've just removed it from my road bike as the frame's on the small side for me so I've replaced it with a 110mm. I haven't weighed it but the review below says the 80mm length is 114g!
A few stems surplus to my needs. A fiver each, postage is £3 on top. Felt stem came off a carbon 29er, its 100mm long. Easton ea50 is 90mm long, giant is 110mm long.