10Pcs Copper Coated 1inch Corner Cube Prism Diameter 25.4mm Trihedral Retroreflector 5 Arc Secs Return Beam Prism

Specification:

Material : K9

Diameter: 25.4mm(1")

Surface Quality: 60/40

Angle Deviation: 5 arc sec.

Coating: copper coated

Brand New And High Quality