Our website listings display both the bearing type (e.g., 6802) and actual size (15×24×5mm, inner diameter × outer diameter × width) for easy identification. Each bearing type includes different brand options, such as NTN Steel, HSC and AITA Ceramic. Additional details, like NTN and LLB (Non-Contact), indicate the brand and seal type for NTN steel bearings. All bearings come pre-greased and ready to use straight from the box; an additional tube of grease is only needed for future servicing.