Check the listing for details. (10) 6001-2RS Premium Rubber Seal Ball Bearing C3 EMQ, 12x28x8, 6001 2RS 6001rs. Width: 8 mm, Condition: New. Listed at 10.75 USD. Dimensions: 12x28x8 Rubber seal on both sides 100% Chrome Steel for higher resistance and durability Supports 27,000 rpm Our high-quality bearing is made to reduce your replacement frequency and maintenance cost Model: 6001 2RS Quantity per Package: 10 Pcs Material: 100% Chrome Steel Protection: Rubber Seal on both sides Greased / Lubricated: Yes Bore (Inner) Diameter: 12 mm Outer Diameter: 28 mm Width (Thickness): 8 mm Supported Revolutions per Minute (RPM): 27,000 PGN's 6001 RS (12x28x8) is a single-row bearing that supports radial loads, made with Chromium Steel providing superior quality and durability. It comes pre-lubricated and shielded to keep the lubricant in and contaminants, dirt and debris out.