Shimano Derailleur Pulley Set, 1 Pair, fits 6, 7, 8 sp

Why did you pick this product vs others?:The "spacers" are there for a reason. I didn't think I needed them and installed them without. But the derailleur will be a bit misaligned if you don't and the gears will be skipping or trying to slide out. The part you screw it into is actually 2 separate parts I found out. Was not convinced it would work on my 25+ year old Cannondale R300 road bike (Shimano RSX drivetrain), since my old pulley wheels were spikey (and very sharp) and not flattend. Plus this one is not metal I think. But it worked perfectly.

These pulley wheels worked great as replacements for an old Shimano Deore LX RD-M550 derailleur. Hard to find these 10 tooth pulley wheels.

used to replace the original pulley set in a very old Shimano 600 installed on a Bianchi Limited. fits perfectly, no hassle installation. works great.

Fit & work great.

I replaced my old ones that were worn out, and these worked perfectly. Unfortunately, the washer they sent with the rear gear, was not the right size. I ended up using the one from my old set, and everything worked out ok.

Too wide for Deore LX RD-M567 8 speed

Good product, good price,Delivered promptly.

According to the sellers list, these were meant to fit my derailleur but I had a bad feeling and wanted to cross check the specs, but the seller didn’t bother posting them. So I wasted a bunch of time ordering them, trying to install one, only to find it didn’t fit, putting the old one back on, and now making a trip to the UPS store to return them. If the measurements were posted all that could have been avoided. So hopefully having the specs will help someone in the future: 9.01mm thick, 38.1mm at the tallest, 10 teeth. Though Shimano brand they are cheaply made, not even as nice as the original 40 year old sealed bearing pulleys that are on the bike now. Good luck and ride on!