Rubber Bands Sizes, Rubber Band Size Chart. 13 lb Product Description: The hook arm can be flexibly adjusted in angle, folded and saved space when not Rubber Band Sizes can be confusing, but we have everything you need all on one page! Click here to view the chart. Learn more 4 days ago ยท New York, USA - Stationery Rubber Bands market is estimated to reach USD xx Billion by 2024. These size numbers make it easier for individuals and businesses to choose the right rubber band for their intended applications. Rubber band numbers 30–35 are for widths of 1⁄8 inch, going again from shorter to longer. Otherwise, use the Rubber Band Size Calculators below. Width: The width of the band measures how wide the band is, perpendicular to the length. 66 * 3. Explore our stock and custom rubber bands for warehouses, offices, and businesses of all types. 8 cm/8.