I used to workout at a community center that has those dumbbells and they always get loose, but they were nice and comfortable......it's hard to spot these types of dumbbells anymore in Gyms these days
That sounds familiar. My previous gym was a weightlifting club with 3 or 4 series of db's, an allen was included.
In most gyms everything is rubber coated, like if there's something wrong with... dropping plates
