The American-made UltiLink System is one of the coolest pieces of gear we've had in the shop in a while. It allows for lightning fast interchange of gear, and for completely customizable carry angle. So for instance, if you have an ESEE Model 4 Knife that you bought from us for under $100 (thanks for the order, by the way), you can use the UltiLink to configure it for horizontal carry. Need to swap the Model 4 for a pistol holster? You can swap them in under 10 seconds, and attach the knife to the UltiLink Lock on your pack. We have the UltiLink Complete Kit, as well as the Lock Expansion and the Pinion Expansion available on our site. Complete kit is $23.99, and expansion kits are $12.99 each. Shipping is free to US addresses, and cheap to everywhere else. Find them here on the site: https://5col.com/collections/vendors?q=UltiClip Swapping Bear Spray for an ESEE on my SKRAM Bag: Manufacturer Video: