I recently became unhappy with the traditional Sch***er Strap Locks and went on a hunt for new options. I was quickly blown away by this product! Installation was an absolute breeze! They stay completely secure and allow 360° movement around the pin/barrel of the system. They don't stick out like pawn chess pieces from the body & strap of your guitar or bass either. The only thing I could possibly complain about is that they should really come with felt spacers in case the ones you have are worn and beat-down. I'm putting these on ALL my instruments! They look and work perfect!