Hole size: on toggle & bar is approximately 2mm x 2
Because they are made from pure stainless steel without plating
Flatten tube as you use it up
This item is also available in my shop in a 20 gram package
* copper plated
6mm Split Rings: Gold, Nickel, Copper, or Black, 500 pcs e 6000 Hole size: on toggle &6mm nickel plated, gold plated, antiqued copper, or black oxide color metal split rings. They're tiny key rings which are great for jewelry making, links, chainmaille and even stitch markers! They are more secure than jump rings. Rings are made with . 6mm (. 024") wire. Outside diameter: 6mm (. 24"), inside diameter: 4. 4mm (. 17"), 1. 2mm (. 05") thick (high) 500 pieces *This item is also available in 100 pc. and 1,000 pc. packages.