This 2-piece aluminum alloy shaft collar set features precision engineering for linear rail applications. With inner diameters of 16mm and 20mm and outer diameters of 35mm and 40mm, these collars secure shafts without causing damage.

Chrome-plated surfaces resist oxidation and corrosion while maintaining hardness and longevity. Ideal for CNC machines, DIY projects, and linear motion systems requiring reliable shaft positioning and axial stops.