XXL chest screw with rivets. There is no escaping this chest screw. When completely screwed on, the internal dimensions are approx. 18 x 35cm. Screwing together is completely possible. The internal dimensions when screwed are then approximately 2x 5x15cm. The necessary leather straps for fastening it over the neck and back are included in the scope of delivery. The straps for the back can be adjusted from approx. 100-120cm. Material: high-gloss stainless steel. The weight is approx. 500 grams without leather straps.