Review on 🔩 M6 Barrel Bolt Nuts Kit: 4-inch Bolts, 0.49-inch Nuts & Allen Key - 12 Sets for Furniture, Cots, Beds, Crib, Chairs by Nick Beck

.and amazingly good packaging that can be reused almost like a 'dry bag' for a car key ring or something else when boating. The metal can be a little flimsy or of poor quality when I actually pull them, but since they have an Allen wrench I'm not going to remove them as easily as I could with a Phillips head. Can be bought again for the same purpose. (In my case I used 3D printed plastic pieces instead of actual "furniture", but they carry some load as they form the mounts for the filament spindle posts.)