1. SOFT CASE INSTALLATION - make small cut with paring knife, pull chain through hole with paper clip, slide the holding par through, never drop your cell phone again.
2. SOFT CASE PUNCH INSTALLATION - with the included punch and your hammer, punch a small hole in the back of your case, insert the chain and holding bar and you're set.
3. HARD CASE INSTALLATION - using your drill, size the drill bit with the hole in the punch, drill a small hole in your hard case, insert the chain and holding bar and your phone is safe an secure.