Most folks need a headset spacer or two. Mixing different brands or having a dozen random heights of spacers looks janky. Like you let your kid pick out your headset spacers while they were blindfolded and jacked up on Koolaid. Not a good look. Make ‘em match. Use as few as possible. Don’t employ four 10mm spacers when you can use one 40mm.
These are basic, US made aluminum spacers. Can you get some cheaper Chinese ones on Ebay? Sure. Go for it. Screw the US economy. US workers don’t need jobs. Tiny bike shops in the woods don’t need money. We grow money on trees and harvest it quarterly. We have a barn full of bales of money. Unfortunately they’re Zimbabwean dollars, and you don’t even wanna do the math on the exchange rate!
Back to business: if you have an aluminum stem, and don’t need some fancy high zoot headset spacers (we have those too!), these are your peach jam.
How to buy headset spacers:
Get your handy ruler or calipers out. Measure your current stack height of spacers. Use a big single spacer or two biggish spacers to take up most of the room. Fill in on the top and bottom with smaller spacers. If you have a carbon steerer tube, you need a 5mm spacer on top of your stem, with a bit of the steerer sticking out from the top of the stem, otherwise Captain Crunch is gunna come visit you, and to be clear that's not a good thing.
We say: buy an extra 1.5 mm and 2.5 mm spacer, just in case.
Black or Silver. 1 inch steerer or 1 ⅛. Silver is not high polished, but it is sorta polished. Not really dull.