The L1280ZZ 8x12x3.5 Single Row Deep Groove Ball Bearings Double Shielded is offered in a pack of 10 pieces. These bearings are designed for reliable performance in compact spaces, with double shielding to protect lubricant and prevent contaminants from entering the bearing. Key benefits Double Shielded protection: ZZ shields seal in lubricant and keep out dust, moisture, and debris, reducing maintenance and extending service life. Efficient, lowfriction operation: Single row deep groove design provides smooth rotation with low friction for everyday precision applications. Compact, versatile size: 8 mm bore, 12 mm outer diameter, and 3.5 mm width enable use in tight assemblies and lightweight equipment. speed capability: Optimized for smooth, consistent rotation at moderate to speeds. Easy replacement: Standard deep groove bearing form factor facilitates straightforward substitution in compatible housings and fixtures. Key attributes Type: Single Row Deep Groove Ball Bearing Model: L1280ZZ Shields: Double Shielded Size: bore 8 mm x outer diameter 12 mm x width 3.5 mm Quantity: 10 pieces Material: not specified in listing Performance: suitable for speed operation with low friction and reliable longevity Applications and use cases Small hobby machinery and RC models: ideal for lightweight gearboxes, small drive shafts, and compact assemblies requiring precise, lowfriction rotation. 3D printing components: suitable for bearing supports, extruder assemblies, and XY axis or roller replacements where space is limited. Small to midsize equipment and instruments: appropriate for precision mechanisms, camera rigs, or compact motors that demand reliable, shielded bearings. Notes Confirm compatibility with your specific mounting and bore requirements (8 mm). The bearing set provides 10 pieces for easy replacement in multiple assemblies.