Quick-Release Lens Tube Filter Holders QTFM3.5-A

The Quick-Release Lens Tube Filter Holder provided by LBTEK is suitable for filters or other optical components with a diameter of 25.4 mm (1 inch) and a thickness of 0–3.5 mm or 3.5–6.5 mm. The entire holder consists of two parts: the slotted lens tube QTFM3.5-B and the filter holder QTFMXX-A, which are quickly detached via magnetic attachment. The slotted lens tube features SM1 external and internal threads, compatible with SM1 lens tube, and includes an SM1NR locking ring to secure it in a specific rotational direction. Multiple filter holders can also be stacked for use. Note: When using, press the QTFMXX-A stainless steel nut with your right finger in the direction of the arrow, while gently pressing the center of the internal magnetic component with your left thumb and simultaneously pushing it in the direction of the arrow to open the spring-loaded clamp. Then, release your left thumb to insert the optical component, ensuring it is tangent to the two cylindrical pins, before releasing the stainless steel nut.