This blue leather lockable bdsm collar is 1" wide and is fitted with a nice sized bondage ring in the middle with a very strong strap which has 6 rivets on it.  The dee ring is 3/4" and the O-ring is 1-1/4" wide.  

In the back of the BDSM Collar there is a choice of buckles. You may have the Standard non-locking buckle, or the Lockable Buckle w/Padlock. I use eyelets in the holes for the Standard Buckle option and oval punched holes for the lockable buckle w/padlock option. The leather needs to stretch over the special shaped locking tongue of the buckle, so no eyelets can be used. You can choose which padlock you would like to have with your bondage collar if you choose the lockable w/padlock option. If you don’t choose, I will choose a padlock for you. You can see all of the available padlocks in my Metal Accessories Menu.

This lockable BDSM collar is available in several colours and leathers. The main photo is showing the royal blue. The top leather is a royal blue leather upholstery hide that I get from the Napa Valley. It is a very vibrant peacock blue. This hide is bonded to a black "super soft hide" that is chrome-oil tanned for a struck-through dye penetration. It has a more pronounced pebble grain to it which gives in texture and a sumptuous feel against the skin!! Its very lush. Feel free to read about all of the different leathers I use in me Leather Information page. All in all the collar is about 10oz thick (3--3.2mm) The combination of hides makes for a very strong bonded collar.