This mallet feels and sounds so good, everyone who plays the vibraphone should have these mallets in their collection! This mallet has been around for so long I think their build quality is low for a reason! You REALLY have to care for this mallet, it wears out pretty soon BUT it’s maybe for a reason - I think this issue is still in the mallets because fixing the issue would change it’s legendary character!
These are also very cheap so you can just buy a new pair when you wear the old ones out - because you will wear them out.