4mm Round Jump Rings

4mm Round Jump Rings are made with 20 gauge (0.8mm) wire and have an inside diameter (ID) of approx 4mm and an outside diameter (OD) of approx 5.4mm with an aspect ratio of 4.7 (AR). These are sawcut plated brass open jump rings.

Use these jumprings for making chainmail jewelry or to attach charms to bracelets, clasps onto chain, etc.

Item Specs:

  • Round Open Jump Rings
  • Plated Brass
  • 20 Gauge (0.8mm)
  • ID (mm) 3.78 - ID (in) .149
  • OD (mm) 5.40 - OD (in) .213
  • Aspect Ratio (AR) 4.7