Circular holes of various sizes are cut into this aluminum triangle. The holes are convenient for cutting out difficult circles, such as when making film molds.

■Hole types
Diameters: 1mm, 2mm, 3.5mm, 4mm, 5mm, 6mm, 6.5mm, 7mm, 8mm, 9mm, 9.5mm, 10mm, 11mm, 12mm, 13mm, 14mm, 16mm, 19mm, 22mm, 26mm