Adjustable Press Nipple Clamps with Link Chain. Once only offered as a bulk product, now these nipple clamps come from the Extreme Line packaged products. Adjustable nipple clamps offer a range of pressures, for a variety of sensations. A good fit for practically any nipple, Press clamps offer a wide range of adjust-ability for a full palette of sensations. Pressure is controlled by the attached screw. These nipple clamps feature a sturdy, durable link chain. Spartacus Press clamps adjust fluidly and effortlessly, allowing for precision adjustments in intensity. Please note these clamps do not have a rubber tip coating. Keep a close eye when first experimenting to not bruise your tissues by checking about every 15 minute. Spartacus A Passion for Quality Catalog.