The LBTEK 30 mm filter wheel features six mounting slots with SM1 internal threads on the inner walls, designed to accommodate 25.4 mm diameter optical components, and includes six SM1R retaining rings. The wheel rotates freely around its axis and achieves precise six-point positioning through inclined slots interacting with steel balls in the base, allowing the centers of six filters to align with a coaxial system. The input and output ports of the fixed base also have SM1 internal threads, compatible with SM1 lens tubes. The coaxial rod through-hole is equipped with an M3 set screw that can be tightened using a 1.5 mm hex wrench. The fixed base includes one M6 and two M4 mounting holes for compatibility with standard optomechanical components. The two Ø6 mm coaxial mounting holes on the lower part of the LBTEK 30 mm filter wheel base are through-holes, while the upper two Ø6 mm coaxial mounting holes are blind holes to prevent accidental contact between the coaxial rods and the filters.