ER/DR/RD – 50 Series Collet Rack from UratechER DR RD 50 Series Collet Rack from Uratech Heavy Duty Storage for ER DR RD 50 Series Collets Built for strength and reliability, the ER DR RD 50 Series Collet Rack is constructed from 16 gauge cold rolled steel with a Lista blue powder coated finish. It provides secure and organized storage for up to 14 large size collets in a compact footprint. Key Features of the ER DR RD 50 Series Collet Rack: 16 gauge cold rolled steel (0. 063 thick) Lista blue