ISC D4 Work/ Rescue Descender One Half Inch It’s been successfully tested with

It’s been successfully tested with all common hardware in the field by experienced tree climbers around the world

Its fluid interior design and Keylock system facilitate handling

This best-selling tool delivers a professional

which offers control at slow or fast speeds

Color-coded diameter

ISC D4 Work/ Rescue Descender One Half Inch It’s been successfully tested withThe D4TM is a double stop device with an auto lock function (which is activated whenever the operator lets go of the handle) and a panic brake which is not overly sensitive in normal use. The D4 cam is made from a super hard solid Stainless Steel and is highly wear and corrosion resistant. The D4 is compliant with CE Standards, NFPA T and ANSI Z359. 4 for the worldwide Rope Access and Rescue markets which typically use 10. 5mm 11mm ropes. The D4