Schaller BM Light 4L CH

These were to upgrade my Squire Affinity JB 5 string which was a present for me. Thomann were great as they were able to source the fifth machine head with the same orientation as the other four. I must say, that it took some modification to the headstock to get them fitted so if the holes are different on your bass you may wish to get these professionally fitted. The bass now has new Machine heads, new Pickups, new pre amp and new Pickguard. A bit of a project for me but I really like doing this to a cheap bass to get the upgrade

Bought these for a HBenton jazz bass. Original HB tuners hardware toal 364g. These upgrades that boast 50% lighter were 288g. Weight saving of less than 21%. A far cry from 50% claim. Somewhat false advertising if you consider a HB stock bass tuning machine as "standard". Not worth the upgrade if you already have the stock HB tuners which appear standard chrome. Not installed yet but the quality looks good. Shame about the weight claim. Disappointed for the money I paid really as the weight loss was key.

Bought for a project upgrade bass, very easy to install and very sturdy despite being so light and made of aluminium and carbon fibre. Would definitley purchase these again

I find them to be really good looking. I got them installed without any major surprises.
On the down side, two of the tuners have a bit too much friction when turning them. It is very hard to describe the feeling, and just marginally bothering

VERY light, helped a ton with my '70s-style Thunderbird with the huge headstock, but they do feel fragile from the lack of weight.
The major drawback though is the installation, you need to drill an extra hole for each tuning key, unless your bass has already got keys with that kind of mounting from the factory (which is very rare).
I don't regret buying them but I'd rather go for the Schaller M4 90, so I don't have to alter my instrument that much.

did the job but expensive - £66!
a noticeable improvement in the weight of my bass.
£40 would have got 5 stars

Good light replacement for my Sire P7. Sire had neck dive, with these tuners now is perfectly balanced. Only thing is that you need to make additional holes for pins. If you are not good with tools ask someone qualified for installation.