Breadcrumb Home/ The Leading Edge of Maintenance | HVAC - Line Set Bending The Leading Edge of Maintenance | HVAC - Line Set Bending Duration 0 hours 3 minutes Demonstrates a ratchet-style tubing bender that bends copper HVAC line sets from 1/4" to 7/8", allowing precise bends like 90 degrees on installed pipes. Back to Course Title The Leading Edge of Maintenance | HVAC - Line Set Bending