This listing is for 100 Anodized Aluminum Square Wire Jump Rings! These are not our handmade jump rings but nicely made commercially made ones that are saw cut and available in FUN Colors. As with most commercially made jump rings, the sizes vary, the colors vary, there may be burrs. But, they do not contain nickel or lead and they are perfect for colorful, lightweight, light-duty creations!
Mandrel Size is 16 gauge 5/32" ID - Actual Size is 4mm ID
18 gauge SWG = 16 gauge AWG
Not sure of what size you need for your project? Contact us. Square rings are 30% larger in volume than the same size round ring so this has to be taken into consideration.