Euclid all-stainless styluses feature similar, small-diameter balls on either end for smoothly incising or adding script to clay without raising a clay furrow. Ball diameters on this stylus (T457A) are 1.5 mm & 2 mm (0.06" & 0.08").  Order all 4 Euclid double ball styluses (or a combined total of 4 of any style ) and get 20% off!