Strapworks carries nickel plated Metal Opening O-Rings in three different sizes: 1 inch, 2 inch, and 3 inch. The wire size for the metal opening o-rings are 0.11 (1 inch), 0.12 (2 inch), and 0.16 (3 inch). The metal opening o-rings are sized according to the inside dimensions. Alternate names include: Round ring with spring gate, Hinged O-rings, Hinged Snap Rings, Calendar Rings, Pin-hinged connector link with snap lock, loose leaf book rings or loose leaf binder rings, and loose-leaf rings.
We can also powder coat your Metal Opening O-Rings for a small additional charge. You can choose from 19 stock colors. There is no minimum on stock colors. You can also order from over 100 available colors. On custom colors there is a minimum of 150 pieces (you can combine different types of metal hardware to meet this requirement). * Please keep in mind that powder coating can delay shipping your order, and that powder coating is only available with metal hardware. For more information on power coating and your metal opening o-rings, please see the Hardware Colors page. When viewing the metal hardware colors page, scroll down to the bottom of the page to read important information on powder coating.
	Metal opening o-rings are most often found on school notebooks. However, those rings are also typically spring loaded. Strapworks' metal opening o-rings are not spring loaded and work great as key rings, mobile Rolodex flippers, quick release connectors between runs of webbing. Other uses include: swatch books, carpet sample books, color reference charts, and display hanging rings.