4 pieces of ABEC9 ball bearings designed for STRONG 107 series drill brush handles. This kit covers sizes 1480, 1370, 940, and 830 and is intended to fit strong drill brush handle nail ball bearings systems. The bearings are built to deliver precise, smooth rotation and long service life in everyday cleaning tasks. Key benefits Restores smooth, efficient rotation of STRONG drill brush handles by replacing worn or damaged bearings ABEC9 precision delivers speed performance with reduced wobble and improved control Helps extend the life of drill brush attachments by maintaining accurate alignment and lowfriction operation Simple replacement set that supports multiple handles from the STRONG 107 series Key attributes Compatibility: STRONG 107 series drill brush handles Sizes included: 1480, 1370, 940, 830 Bearing type: ABEC9 ball bearings Configuration: 4 pieces in the kit Application: suitable for nail ball bearing configurations in strong drill brush handles Performance: designed for precise, lowfriction rotation during cleaning tasks Applications and use cases Replacement parts for worn bearings in STRONG 107 series drill brush handles to restore original performance Upgrading multiple handles in a workshop: rotate through sizes 1480, 1370, 940, and 830 as needed DIY or professional cleaning tool maintenance: keep drill brush attachments operating with smooth, consistent motion Notes on compatibility and use Specifically designed for STRONG 107 series handle bearings and the corresponding sizes 1480, 1370, 940, and 830 Use as replacement components to maintain efficiency and control during cleaning tasks This description reflects the product's brand, model, and features, focusing on replacement bearings (ABEC9) for STRONG 107 series drill brush handles and the four included sizes.