1. Replacement screws are used when the frame has not been damaged but a screw has fallen out. Using Safe-Lok screws solves this problem with its Tight Bond coating by locking the screw in place.

2. Repair screws are used when the frames hardware has stripped threads or a screw has been drilled out. Tap'n'Lok screws tap new threads easily to make the repair a snap! Tap `n' Lok screws also have our Tight Bond coating to lock screws into place.

3. Tight Bond is a unique locking system that eliminates temple flop and lens drop from occurring. Although the screws can be removed with a screwdriver, they will not become loose or fall out like conventional screws.