C90 – Ferric Oxide tape (Type I) Clear, reinforced bridge, 5-screw, tabs-in cassette Tape width: 3,81m(+0.00/-0.05mm) Tape length: 131m Recording time: 90min max Base film: Polyester Base film thickness: 8 µm (+/-0.5 µm) Coating thickness: 5 µm (+/-0.5 µm) Total thickness: 13 µm Coercivity: 370 Oe Saturation retentivity: 1480 G Oxide: Fe2O4