Our slotted lens tubes offer versatile and convenient optic adjustment without the need to disassemble your setup. Available in three diameters—Ø1/2", Ø1", and Ø2"—these tubes feature SM05, SM1, and SM2 internal and external threads, respectively. Optics are securely held inside using two retaining rings. The side slots enable easy access for adjustments, while a nylon-tipped setscrew allows 360° rotation of the tube for precise positioning. Once aligned, the setscrew can be tightened to fix the tube securely in place, making it an ideal solution for dynamic optical setups.