Two pieces of model 689 PP plastic bearing made from polypropylene. These bearings are corrosion resistant, nonmagnetic, and provide insulation in sensitive assemblies. The compact 9x17x5 mm size fits small shafts and housings, making them suitable for lightload applications in electronics, hobby projects, and small machinery. Key benefits Corrosion resistant: designed to withstand moisture and chemical exposure better than many metal bearings. Nonmagnetic and insulating: prevents magnetic interference and provides electrical insulation in electronic or sensor assemblies. Lightweight and compact: small 9x17x5 mm footprint suitable for tight spaces. Durable in lightload use: appropriate for low to moderate load bearing needs in hobby and small equipment. Convenient 2piece set: includes two bearings for multiaxle or spare usage. Key attributes Model: 689 Material: polypropylene (PP) Size: 9x17x5 mm (inner bore 9 mm, outer diameter 17 mm, width 5 mm) Quantity: 2 pieces Features: corrosion resistant, nonmagnetic insulation Functionality and compatibility Designed for shafts with 9 mm bore Suitable for lightload bearing roles in small mechanical assemblies Nonconductive construction makes them compatible with sensitive electronics and magnetically sensitive devices Use cases Electronics and sensor housings: provides a nonmagnetic, insulating bearing for small rotating parts while resisting corrosion in humid environments. Hobby robotics and 3D printers: serves as a lightweight, corrosionresistant bearing for guide axles or idlers in compact builds. Small appliances and DIY projects: ideal for lowload rotation where metal bearings may corrode or cause magnetic interference. Note: This description reflects the product as two pieces of model 689 PP plastic bearings with size 9x17x5 mm, offering corrosion resistance, nonmagnetic properties, and insulation for applications requiring a compact, lightweight bearing solution.