10-Pack 6702ZZ Bearings 15x21x4mm - Shielded10 Pack 6702ZZ Shielded Ball Bearings 15mm x 21mm x 4mm Double Metal Shields Chrome Steel This 10 pack of 6702ZZ deep groove ball bearings is made from durable chrome steel and features double metal shields for dust protection. Pre lubricated with grease, these slim profile bearings are perfect for RC vehicles, robotics, and any project where compact, reliable rotation is key. Inner diameter (ID): 15mm Outer diameter (OD): 21mm Width: 4mm Shield type:
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