Pulsar PSP-50B Ring Adapter

The Pulsar PSP-50B Ring Adapter facilitates Krypton and Proton clip ons to be attached to optics with an objective diameter is 50 mm. Inserts provided as standard accessories include those with an inner diameter of 51.6 mm (for mounting the adapter on daytime optics with an outer lens diameter of 51.6 mm), 53.4 mm (53.4 mm), 55 mm (54.7–55.6 mm), 56 mm (55.7–56.6 mm), 57 mm (56.7–57.6 mm), 58 mm (57.7–58.6 mm), 59 mm (58.7–59.6 mm).