BD Loops 18-20 Preformed Saw-Cut Inductance Loop 4x5 or 3x6 50' Lead Wire

*For installation in asphalt or concrete 3/16 saw-cut grove
*16 AWG loop wire design for superior performance.
*Pre tested 3 ways with meg-ohm meter, inductance meter and live detector
*Optional Installation kit includes: Template block set, caulk string, pizza wheel, wedge tool, soap stone marker, custom tool bag.
*EZ installation instructions
*Built in backer rod and 3rd level of insulation to protect against failure.
*Pre-phased and color coded at factory for EZ hook-up
*No need to make 2nd saw-cut for lead-in. Lead-in and loop jacket same size.
*MADE IN THE U.S.A.

• Recommended installation tips:

• • Works best with 3/16" saw-cut blade or wider ¼” blade width. Learn about air pockets and other issues caused by 1/8” grooves.
  • Use the Saw-Cut Layout Kit to quickly lay out the cutting pattern.
  • Use a loop sealant NOT A CRACK FILLER to seal the groove.
  • Loop should be installed black side up
  • to ensure phasing direction matches. Due to the wire’s wedge shape
  • it is also easier to push the loop in with the black side up.
  • (Red always down)
  • Use a “V-Cut” for the yoke to simplify your installation. Learn more here!
  • Align loop over saw-cut groove before
  • insertion into the groove will prevent having to pull up and
  • realign a “tight-fitting” loop.
  • Sprinkling sand over the sealant will create a barrier between the sealant and car ties and allow you to open the lane quicker. We have a complete article about installation tips and tricks for saw-cut loops here.

The entire loop including the lead-in fits within a 3/16” saw-cut groove preventing wasted time spent double saw-cutting or doubling blades to cut the home run lead-in.
Every BD Loops Saw-Cut loop comes with a 3/16” sealant tip, which allows the installer to seal the loop in one pass from the bottom up. No more waiting for sealant to seep to the bottom of the groove and applying multiple coats.


Not at all! As long as you don’t make the saw pattern larger than the loop size (you can never make a preformed loop any larger) our loop will fit every time. We designed our Saw-Cut loops to be able to take up excess loop in the lead-in run, which makes the loop smaller.