I've actually got 8 pannier hooks. These fit perfectly on older Blackburn racks with 8.5 mm diameter tubing. They don't fit so well on my new Tubus rack with 10 mm tubing - they actually work but don't sit all the way onto the hook. I've also got some of the D-rings that I used to attach the bungy cords on the bottom of my panniers. Catriona, you can PM me with your address, and whether you want the D-rings also, and I send them along.
Oil is good, grease is better.
2007 Peter Mooney w/S&S couplers/Terry Butterfly
1993 Bridgestone MB-3/Avocet O2 Air 40W
1980 Columbus Frame with 1970 Campy parts
1954 Raleigh 3-speed/Brooks B72