Designation / Symbol :3307 2RS / 3307-2RSR / 3307 DDU / 3307 LLU / 3307 LLB / 3307 EE / 3307 2RS = 5307 2RS / 5307 LLD / 5307 EE. Type Seals: rubber seal (2RS = LLU). Bearing play/clearance:Basic. Linear ball bearings, rollers, rails, trolleys, linear guides .
eBay