The sharp edges and points of N3 allow you to create clean angles, plumb walls, and smooth surfaces on your clay vessels. With two 90° corners and a 70° angled edge, this pottery tool provides a ton of versatility in a palm-sized rib. size: 3.5" long x 3" wide material: maple wood Comfortable, beautiful, and practical. Handmade by a creative team in St. Louis, MO.