small: 15 cm long 2cm opening 2.7mm thick
large: 16 cm long 3cm opening 2.7mm thick
My favorite degreaser is Dr.Bronners soap and my favorite abrasive is good old baking soda. If your jewelry gets dirty or tarnished give it a little love with these two friends and you will have success. Use a soft toothbrush or your fingers to apply. Rinse with water. For a little more shine you can buff with a soft jewelry polishing cloth, though the natural texture and burnishing of the surface through wear is a beautiful thing!