4 - 4" Blue Swivel Rubber Locking Caster Wheels for ATA Rack Road Cases by OSP

4 qty. OSP ATA-BLUE-4-LOCKING Premium 4" Rubber Caster for ATA Cases and Racks Brand NEW! Heavy-Duty Smooth-Glide Rubber Caster with Locking Mechanism used for for ATA Cases, Racks, etc. Mounting Plate: 4-1/8" X 3-1/8" 12-Gauge BLue Zinc P...