Got a few extra keys or accessories you can't seem to fit anywhere? The extension post allows you to hold up to 4 extra keys on your key organizer. It increases your key organizer's carry capacity from 7 to 11 keys - perfect for those who need a little more space and want to keep the slim profile they know and love. Simple design, durable and easy to install: Just twist the extension post into the threaded insert of the existing locking mechanism and you're good to go. Stainless Steel Hardware. Dimensions: 10 x 3.5 x 0.3mm.