How safe are the Quick-Lock Dumbbells?
The special retaining screw design is very safe. The only way to release the weights is to manually turn the locking screw to the exact open position. The weight plates interlock and are held tightly against the chrome backing plates that are welded to the handle. The plates can not rotate which is the cause of normal dumbbells becoming loose. You know the dumbbells are locked by just looking at the engraved marks on the handles and because everything is held tightly and there is no looseness or rattling. You can feel free to use the dumbbells overhead and in any orientation you like.
