These precision-engineered 6701-2RS miniature ball bearings come in a convenient 10-pack, perfect for various small machinery and DIY projects. Each bearing measures 12x18x4mm (approximately 0.47x0.71x0.16 inches) and features a deep groove design that delivers smooth, quiet operation. The double rubber seals effectively protect the bearing's internal components from dust and debris, ensuring consistent performance. These compact bearings are ideal for applications where space is limited, offering reliable rotation and support in tight spaces. The high-quality construction provides dependable performance across various uses, from hobby RC vehicles to small mechanical assemblies. Their versatile design makes them suitable for both replacement parts and new project builds. The bearings' precise engineering ensures minimal friction and consistent operation, while their robust construction helps maintain stability under regular use.