The ARTIFEX Laser Grade N-BK7 are right angle prisms that is usually used to achieve a 90° deviation in a light path. This prism is made up of an N-BK7 grade A optical glass and has a total dimension of ± 0.1 mm. In addition, the right angle prism has a surface quality of 20/10 scratch-dig and has a flatness rate of 10 at 632.8 nm.