DMM A337 Ultra D Locksafe Carabiner, Titanium/Green Type_25AP enables user to mill lumber

enables user to mill lumber where the tree falls

The Good Rigging Control System created by Greg Good (GRCS for short) is an essential tool for any professional tree crew working with large timber

The Pro Series is beefier to accommodate bigger

equally efficient

DMM A337 Ultra D Locksafe Carabiner, Titanium/Green Type_25AP enables user to mill lumberThe Ultra D is similar in size to the Ultra O but with even greater strength due to the back configuration. The pronounced D shape forces the loading along the major axis of the carabiner to maximise strength. Perfect for use at the end of lanyards, and in fact for most other working at height applications.