Magnetic tape ring inner diameter: 84 mm, magnetic tape ring outer diameter: 100 mm, magnetic tape ring width: 10 mm, weight: ≤ 0,75 kg, magnetic tape material: 17410 hard ferrite 9/28 P, material ring: Aluminum, period length: 2 mm, operating temperature range: –30 °C ... 100 °C, storage temperature range: –30 °C ... 100 °C, temperature coefficient: (11 ± 1) μm/K/m