This collar very is similar to my other collars in that the hinge and locking ends are
ship lapped to give it a smooth and elegant look that will not snag on hair or pinch skin.
The difference is it is made out of 3/8 in. Aluminum. The medium size, 15-1/2 in. collar
weighs a mere 3 ounces compared to 8-1/4 ounces of the same size Stainless Steel collar.
The hinge pin and set screw are both Stainless Steel, in fact this set screw closing design
 is the same as used in the Stealth collar. This hidden screw adds to the sense of mystery.
The Aluminum collar is for those that have trouble wearing a heavy Stainless collar .
I do not include a leash/lead ring set with this collar due to the fact it is not as scratch
resistant as the Stainless steel version. If you do scratch it or just want to shine it up,
and what better way to occupy an errant slaves time, any good aluminum polish will do.
Or just let it take on it's own natural patina.
The set screw does not have to be removed to open the collar, only backed off a few turns.
This lessens the chance of dropping and loosing it but one extra set screw is included
along with two Allen wrenches.