Four-Bolt Flanged Unit (UCF207-20) - Sparex Part S.18544Sparex Four Bolt Flanged Unit (UCF207 20) S. 18544 This Sparex Four Bolt Flanged Unit is a high quality bearing designed for durability and performance. It features a UCF bearing type with a 1 1 4" inner diameter and a 72mm outer diameter. This unit is ideal for a variety of applications and is compatible with a wide range of machinery. Key Features: Bearing Type: UCF Brand: Sparex Inner Diameter (d): 1 1 4" (31. 75mm) Outer Diameter (OD): 72mm Width