Straight slots core vents 0.3 mm

Core vents with holes diam. 0.8 mm

Standard sizes 3, 4, 5, 6, 8, 10, 12, 13, 15.
Can be made with holes of 1 mm diameter and a higher number of holes.

Square and hexagonal core vents with holes diam. 0.8 mm.

Square: 4/4.
Hexagonal : 6/6, 8/6, 10/6, 12/6.