2 Corner Cube reflectors with removable ring, protection cover for optic and certificate, in wooden box.
Radius: 6.35 mm ± 0.0025 mm (0.250 in ± 0.0001 in)
Centring of optics: ± 0.003 mm (± 0.00012 in)
Shape ball: ≤ 0.003 mm (≤ 0.00012 in)
Acceptance angle: ± 30°, no limitation due to ring
Material ball: Stainless steel, surface-hardened, magnetic
Weight: 6 g (0.21 oz)