Other

Origin-8's 1-inch Headset Spacers are made of lightweight and durable aluminum and come in 2mm, 5mm or 10mm thicknesses. You get a bag of 10 spacers.

Steel 1mm spacer fits Shimano cassette bodies - Great for 10 sp cass on 8/9 sp hubs - Also for many other fit applications

Converts braze-on front derailleurs to clamp-on. Available in multiple clamp diameters.