The LBTEK Free-Space Filter Wheel Mount features a dual-wheel structure, with each wheel containing 6 slots for a total of 12 slots. The inner wall of each slot has SM1 threads for 25.4 mm diameter optical components, and includes 12 SM1R retaining rings. Each wheel can rotate freely around its axis and achieves precise 12-point positioning through inclined grooves interacting with steel balls in the base. The two wheel discs can be accurately aligned via positioning slots, allowing easy adjustment to center all 12 filters individually. The base includes one M6 and two M4 threaded holes on the bottom for compatibility with standard optomechanical components.