The filter or test target can be securely held when it slides along the back of the stainless-steel spring clip；The guidance of the upright and right-angled side plate maintains its repeatability；The bottom-located tapped holes can meet the requirements of various applications.
| Suitable for square filters or test targets with an area of 50.8mm×50.8mm； |
| It also supports round filters with a diameter of 50.8mm； |
| The L-shaped side plate design enables that the optical axis is not damaged during replacement of the component； |
| The maximum thickness is up to 4mm. |
