LEADER evaporator - Leader in Maple Sugaring Industry since 1888

The black cap, 31.5 mm will fit the following bottles:

Gallone Glass Bottle, 250 ml (8.45 oz)
Gallone Glass Bottle, 500 ml(16.9 oz)
Marasca Etched Glass Bottle, 250 ml (8.45 oz)
Marasca Etched Glass Bottle, 500 ml (16.9 oz)
Marasca Glass Bottle, 250 ml (8.45 oz)
Marasca Glass Bottle, 500 ml (16.9 oz)

Sold by the each.