Light elastics :

-High elasticity and fatigue resistance.

-Pulling force ratings are based on the elastic being stretched 3 times the listed inner diameter.

-Pulling force light 2.3 N (227 g).

-Material latex.

-Inner ø8.0 mm / 5/16 inch.

strong elastics :

-High elasticity and fatigue resistance. Pulling force ratings are based on the elastic being stretched 3 times the listed inner diameter.

-Pulling force strong 4.5 N (455 g).

-Material latex.

-Inner ø8.0 mm / 5/16 inch.