KLP lens plates are designed for use on multiple lens combinations.This anti-twist lip can be positoned with a 90° or 30° angle depending on your application.
The reason for the two different angles, is to enable you to have more of a contact point on the tripod collar. Some tripod collars that offer a close to a 90° angle or slight radius, the 90° angle on the lip works best. Other tripod collars that offer a large radius or a non 90° angle, the 30° angle on the lip works best.
All KLP plates have additional 1/4-20 accessory mounting holes and some also have 3/8-16 accessory mounting holes. Some of the KLP series plates offer multiple 1/4-20 mounting screws as well as multiple positions for the anti-twist lip.