standard ground stoppers
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3
Hollow stoppers, hexagonal plate, pointed bottom, borosilicate glass 3.3