50 Pratt’s Junction Road         Sterling, MA 01564        (P): 978-422-3400        (F): 978-422-3422        (E):


Technical Products, Inc.
50 Pratt’s Junction Road
Sterling, MA 01564
(P): 978-422-3400
(F): 978-422-3422


TP Manufacturing, PA Sales Office
1024 Roelofs Road
Yardley, PA 19067
(P): 215-369-2853
(F): 215-369-8642

You can also contact us through our web form by clicking here.

HELO Sling



  • Developed the GRAPLES System consisting of a male coupler suspended from an aircraft sling and a collapsible collection cone leading to a female receiver attached to the load
  • Nominally built as a 10,000-lb capacity device, the GRAPLES System has been tested to over 70,000-lb load in laboratory testing and supported more than 50,000-lb in crane testing



  • Demonstrated successful coupling of a helo sling to a load in a hands-free mode and decoupling via the remote release handle
  • Device is considered ready for advanced military helicopter slung load flight testing


If you have any questions or if you'd like to find out how we can assist you with your engineering or manufacturing needs, please contact us.