Urethral Ridged Urethral Probe With Glans Ring The probe is hinged on the ring to get the perfect angle for you and making insertion slightly easier. It can be a useful aid in helping you adjust to urethral insertions for Electro Play, Catheterisation, CBT and other cock play scenarios. Approximate Measurements:Overall Length: 85mmInsertable Length: 70mmPlug Width (slimmest): 6mmPlug Width (widest): 10mmRING SIZES25mm, 28mm, 30mm and 32mm This product is certified 100% Non-Magnate and medical-grade steel. Beware of cheaper products that are not solid surgical steel but chromed steel or poor quality surgical steel that contains Magnate. Magnate is the ingredient that makes steel rust. We will only include this endorsement on our 100% surgical steel products.