What you get: 1 holder + 3 blades + 3 drills + 1 wrench. Size data comes from the inner diameter of the ring. 17mm / 19mm / 21mm, a must-have tool. Many woodworking jobs require the production of standardized components. With our ring forming tools, you can create multiple rings of uniform thickness and standard dimensions. Speed up the task: Smoothing the wood ring by hand can take an hour or more if precision is required. Now you can accurately cut the correct shape with the desired smoothness in just a few minutes. Perfect for making napkin rings and jewelry. Carefully crafted and polished wooden rings can make beautiful tableware or jewelry. Excellent woodworking skills can produce beautiful wooden chain beads, pendants, bracelets, and now also rings. PERFECT CRAFT: Make smooth, perfect wooden rings easily. Buy now. This thick wooden ring treats every customer with care.