Check the listing for details. 6203-2RS C3 EMQ Premium Rubber Sealed Ball Bearing, 17x40x12, 6203RS (10 QTY). Condition: New. Listed at 16.85 USD. Dimensions: 17x40x12 mm Rubber seal on both sides 100% Chrome Steel for higher resistance and durability Supports 20,000 rpm Our high-quality bearing is made to reduce your replacement frequency and maintenance costModel: 6203 2RS Quantity per Package: 10 Pcs Material: 100% Chrome Steel Protection: Rubber Seal on both sides Greased / Lubricated: Yes Bore (Inner) Diameter: 17 mm Outer Diameter: 40 mm Width (Thickness): 12 mm Supported Revolutions per Minute (RPM): 20,000 PGN’s 6203RS (17x40x12) 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.