2Pcs Rear Derailleur Pulley Aluminum Alloy Guide Wheel 11T Jockey Wheels Rear Derailleur Pulley Roller Wheel Bicycle Derailleur Accessories for Road Mountain Bike Bicycle(Blue)

Value for money

Fitted these to a 105 derailleur set up, initially the toggle wheels sun free but I soon discovered that the width of the toggle spacers are too wide and were pushing the derailleur cage into the rear spokes. Thinner spacers are required, unfortunately they had to be removed.

Purchased and quick delivery fired one pair and works great

Too wide to fit a Shimano XT rear using the original pins but no new longer pins provided

They're too big in every respect. Too wide for the derailleur cage and the teeth are too big for the chain and they hook the chain and cause issues with how it runs. You can even see this in their photos where there's a close up of the bottom pulley and the chain isn't sitting right on it!! Funnily, the only thing too small is the holes in the washers, which I had to enlarge to get the bolts through. Basically...DO NOT BUY

Bought these for my deore derailleur. The pulley wheels should be 8 mm wide. These were 10 mm.

Too wide for standard 14.2mm derailleur

I have not used them at the present. For future use.Certainly better than the ones supplied with the bike. They have nice quality inner bearings.