1/2″ Hole Cutter for grommets
These cutters are used with a die, they are handheld & hit with a hammer.

*same size used for ventilators*

CS Osborne #500-4

Punch holes in vinyl boxing so cushions can breathe when sat on. Why pay for brass vents when you can buy this tool – just hit it with a hammer to create vent holes.

CS Osborne #622

Use this vent setter with 3/4″ ventilators.
CS Osborne #621-3/4″

3/4″ Ventilators
Used in vinyl cushions to allow them to breathe.
Use a #4 grommet hole cutter to punch holes for vents.
Sold by the gross [144 pieces]
CS Osborne #V-1