of 100 Rubber Grommets 1/4 '' Inside Diameter, Fits 7/16 '' Panel Holes -LRB- More Specs listed Above -RRB- Package Includes : 100 Rubber Grommets Inside Diameter 1/4 '' -LRB- 6.4 mm -RRB- Groove Width 1/16 '' -LRB- 1.5 mm -RRB- Groove Diameter 7/16 '' -LRB- 11 mm -RRB- entire outside Diameter 5/8 '' -LRB- 16 mm -RRB- general Thickness 3/16 '' -LRB- 5 mm -RRB- Durometer hardness - 60 Can be used indoors or out-of-doors. Can be used to seal holes and many other .