Our rubber O-Rings for leather are very useful in creating necklaces and bracelets. They come in a variety of colors and can be used to add a color accent where ever you like . They also work great to hold sliders in place. The 10 mm rubber O-Rings work great on Regalitz leather, 10 mm flat leather, and double strands of 5 or 6 mm round leather. Sold in Bags of 10 pcs.