Copper Crimp Tubes Quantity: 100 Crimp Tubes Quality: Excellent Metal: Pure Copper Type: Crimp Tube ,,, Spacer Size: 2 x 2 MM ( Inner Diameter ( 1.1 mm ) Size: 3 x  3 MM ( Inner Diameter ( 2.1 mm ) Size: 6 x 2 MM ( Inner Diameter ( 1.1 mm ) Size: 6 x 3 MM ( Inner Diameter ( 2.1 mm ) Other: Copper crimp tube beads ,, Or can be used as a tube spacer.  We have a variety of this type of beads, plus many more in our eBay store!