Product Name: Pillow block ball bearing Series: 2**,3** Hot models: ucp214, uc306, uc218,uc312 and so on. Precision Rating: P6, P0, P5, P4, P2 Material: Bearing Steel (GCr15) /Ceramics /Carbon steel/Stainless steel Clearance: C0 C1 C2 C3 C4 C5 Seal: ZZ, 2RS, open Features: High Precision, High Speed, Long Life, High Reliability, Low Noise, Reduce Friction Certification: ISO 9001: 2008 Packing: 1. Neutral Packing Bearing 2. Industrial Packing 3. Commercial Packing Bearing 4. Customize Delivery Time: 15-20 Days After The Order is Confirmed Shipment: 1. By Sea 2. By Air 3. By Express