Type: Without Teeth (smooth bore) Outer Diameter: 22 mm Slot Width: 11 mm, 16 mm, 21 mm Bore: 5 mm, 6 mm, 7 mm, 8 mm, 10 mm, 12 mm, 15 mm Key benefits Flexible bore compatibility: choose from 5 to 15 mm to fit a wide range of shafts. Versatile belt compatibility: slot width options of 11 mm, 16 mm, and 21 mm support different belt widths in a single pulley. Compact and space efficient: outer diameter of 22 mm makes it suitable for small or tight assemblies. Smooth bore design: without teeth, this pulley is suited for nontoothed belt configurations and straightforward mounting. Easy replacement and maintenance: standard bore options allow quick installation on compatible shafts and easy part replacement. Practical applications Small hobby machinery and electronics projects: or upgrade pulleys in compact belt drives for 3D printers, hobby CNC machines, or robotics with limited mounting space. Belt drive assemblies with varying belt widths: implement in equipment where belt widths of 11 mm, 16 mm, or 21 mm are used, while keeping a consistent 22 mm outer diameter. Educational kits and light automation: serves as a readily adaptable pulley for teaching setups or small conveyors that require multiple bore sizes to fit different shafts. Notes Type is Without Teeth, indicating a smooth bore pulley suitable for nontoothed belt systems. Ensure bore size matches the shaft diameter and select the correct slot width to align with the intended belt width.