Handguard for Folding Hex Key Set

Since getting my 3D printer I've worked with hex bolts a lot and the hex key sets I own are the folding type which are convenient for keeping all of the keys together for occasional use. However after the n-th project where I had to put them to use, I got annoyed with the keys constantly slipping as I was torquing a bolt, so I quickly threw together this handguard against which the key can be pressed to hold it in a mostly straight position while using it. I designed it specifically for the Husky Folding Hex Key Sets, but I don't see why it wouldn't work for other brands as well.