Duct Reinforcement Systems Tie Rod Locks

The ORIGINAL Condu-lock; Celebrating 25 Years!

Spring Lock®

  • The easy choice for 1/2" and 3/4" EMT!
  • 150% stronger than plastic plugs!
  • NO crimping required
  • NO de-burring required
  • NO plastic components
  • Patent #D496,852
  • Patent #7,114,899
Patented, spring-loaded stud makes duct reinforcement a SNAP.
Condu-lock, Spring-lock, Stud-lock, T-Lock


Labor-saving tie rod construction hardware.

Stud-lock® is the result of combining our field-tested Condu-lock® and a threaded stud, allowing one person to reinforce duct without assistance! Stud-lock® keeps the conduit in place for fastening the sealed washer and locknut outside the duct wall. Available for 1/2" and 3/4" EMT!

T-Lock - Another innovation for the HVAC industry!


Another innovation for the HVAC industry

The economical alternative...installs in seconds! The quick and easy way to comply with SMACNA regulations for securing duct rods. Elminates welding and wire ties! Available in 1/2" and 3/4" EMT!

EZ-End - Reinforced Angled Duct Adapter


Just subtract an INCH!

EZ-End - Reinforced Angled Duct Adapter works with both 1/2" and 3/4" EMT. Attaches to CondoLock. There's no need for two sizes! Ez-End is made from UL-rated, glass-reinforced nylon ULTRAMID 8233GHS POLYMIDE.

Magnetic Qwik-Chuck - Fits any Drill.

Magnetic Qwik-Chuck

For quick installation of Condu-lock®, Spring-lock® and Stud-lock®, try our magnetic Qwik-Chuck. Fits any drill.

Qwik-Seal Hardware - 14 gauge thick steel washer.

Qwik-Seal Hardware

14-gauge thick steel washer, pre-assembled with 1 1/4" bolt. Qwik-Seal Hardware comes in every box of Condu-lock®.