Name: Dental orthodontic elastics.

Package: 5000 pieces/pack.

Available models: 1/8" 3/16" 1/4" 5/16" 3/8".

Available forces:
3.5oz light

Available sizes:
1/8"   3.16mm
3/16"  4.7mm  
1/4"  6.35mm
5/16"  7.9mm  

Super Elastic and strong too. Please feel free to buy.