Beadalon ring mandrels are made of sturdy but light aluminum. Because they are designed without a groove, they are ideal for crafting wire-wrapped rings and sizing rings. Easy to use and available in two lengths, long and short, these mandrels can be used for ring sizes 3.5 to 10.75.
If a ruler just won't do, use a Beadalon Slide Gauge. Perfect for measuring Beads, calibrated cabochons, and other small objects.