The mounting clamp serving PS-22 fits on almost all scopes, the number in millimeters behind what the adapter is the minimum and maximum outer diameter of the rifle scope that is appropriate for that adapter.
Mounting bracket / Adaptor:
ADAPTER # 1: 25.4 mm to 30 mm - eg Leupold 1.5-5x20 PR, 30 mm - Leupold 1.5-5x20 MR / T M2, Zeiss 1.1-4x24 T
ADAPTER # 2: 38 mm to 42 mm - eg Meopta Artemis 2000 4x32, 42 mm - Leupold Mark 4 3-9x36, Leupold Mark 4 2.5-8x36, 4x36 Kahless
ADAPTER # 3: 46.7 mm to 50 mm - eg Leupold 3.5-10x40, Leupold VX-II 3-9x40, 48 mm - 1.5-6x42 Zeiss, Swarovski PV-N 2.5-10x42, 48.7-49 mm - Meopta Artemis 3000 3-9x42, 49.5 mm - Meopta Artemis 3000 4-12x40, 50 10x42 mm Schmidt @ Bender PMII
ADAPTER # 4: 56 mm to 58.7 mm - 2.5-10x50 Zeiss eg, 57 mm - Schmidt @ Bender 3-12x50, 58.7 mm - Leupold 4.4-14x50, Leupold VX-III 3.5-10x50
ADAPTER # 5: 46.7 mm - eg Leupold 3.5-10x40, Leupold VX-II 3-9x40
ADAPTER # 6: 62 mm - eg Zeiss 3-12x56, Swarovski 2.5-10x56, Kahless CSX 3-12x56
You can set the desired mounting clamp / adapter number selection during the ordering process in the space for comments.