Lock on grease couplers

[deere66]

I have found about 1 in 5 are difficult or impossible with the g coupler.
It isn't the width so much as the length (that's what she said )

I've a couple that can't handle the width and others that need a tighter bend to fit properly

 

[Mr Skinny]

I've a couple that can't handle the width and others that need a tighter bend to fit properly

its a lovely noise when you succeed in getting an awkward nipple greased