Lennox Y9858 – Klein Tools 86520 5-Blade Duct Crimper is a professional-grade HVAC hand tool designed for forming tight, secure crimps on round ductwork. Built for daily use by contractors and technicians, this crimper creates consistent crimps that ensure proper duct fitment and reliable airflow connections.

The 5-blade head produces uniform crimps in one smooth motion, reducing effort while improving accuracy. Its heavy-duty steel construction provides long service life, while the ergonomic handle design offers better control and comfort during repetitive tasks. Ideal for sheet metal duct installation, repairs, and retrofits, this tool is a dependable addition to any HVAC tool kit.

Compatible with standard round ducting, the Klein 86520 duct crimper helps create snug male ends for easier duct assembly, minimizing air leaks and improving overall system efficiency.

 

Key features and benefits:

• 5-blade crimping head for uniform, professional results
• Forms tight male ends for secure round duct connections
• Heavy-duty steel construction for long-term durability
• Ergonomic handles for improved grip and reduced hand fatigue
• Designed for HVAC sheet metal and ductwork applications

 

Common applications:

• HVAC round duct installation
• Sheet metal duct fabrication
• Repair and retrofit work
• Residential and commercial HVAC systems

 

Product identification:

• Lennox item number: Y9858
• Manufacturer part number: 86520
• Tool type: 5-blade duct crimper