DeWALT N368300Trigger Assembly For Multi Tools DCS355 DCS356 The trigger assembly goes next to the spring and the lock-on button. This item is made of plastic and is available as an individual replacement part. It is a genuine item that is supplied by the original equipment manufacturer for use with DeWALT oscillating multi-tools. A set of pliers may be necessary during the installation of this part. Over time this item may break and will need to be replaced.