Stretching to larger sizes naturally means a greater gap between sizes, and the gap between 3/4" inch and 7/8" inch is no exception. In-between sizes like 21mm are great for creating a stopping point so that your piercing can rest and heal between stretches. UBJ’s got you covered with a steady selection of high quality 21mm plugs / gauges in a variety of materials. Plugs and tunnels with double and single flare variations are ready to ship, and material choices like stone, wood, glass and stainless steel make it easy to find something you love. Browse our selection and find your next pair of 21mm transitional plugs!