Silver letter opener. Make your own letter opener! This high-quality silver letter opener is constructed entirely of metal. It is 7 3/8 inches in length and designed to be perfectly balanced after adding your favorite beads. There are 2 1/4 inches of space to place your beads and the threads allow for 1/8" adjustment so you get the perfect fit. The mandrel (rod) is 3/32" (approximately 2.5mm) thick and works with beads having this size hole or bigger. Visit our "Large Hole Beads" category and select Large Hole Beads (2 - 3mm hole size) for an incredible selection of beads and spacers that are guaranteed to fit our beadable letter opener.