It's actually for the aftermarket twin headlamp nose fairing I'm going to fit. It's exactly like a bicycle seat post clamp but smaller (10mm max diameter). The fairing is quite weighty so I want to mount it top and bottom and not just to the headlamp mounting bolts. Thanks for the offer Wraith600, I need four in total. If you'd be prepared to post them for me give me a price and I can pay you by PayPal. Please send me a PM and I'll give you my address. Thanks again for everyone's help.