Master Series Premium Hush Locking Silicone Comfort Ball Gag O/S. This odorless, tasteless ball gag is made from soft, matte silicone, designed to keep the corners of your mouth comfortable. The smooth material extends to either side, attached to an adjustable leather strap with stitching details and an optional locking feature with the addition of a small padlock. Measurements: adjustable from 16 inches to 22 inches in length, ball gag measures 1.65 inches in diameter. Materials Silicone, metal, leather. Color Black. Buckle closure.