Willcoxon Research 991D-2 Aircraft/Helicopter Balancing Kit Sensors. These sensors have four (4) pin connectors and are in good used condition. They have been bench checked are fully functional. It’s a great deal at this price which includes free shipping!

I have two (2) of these sensors available but this auction is only for one (1). If you want to purchase both sensors, please be sure to change the quantity before completing your purchase.