The RZ1, RZ5, RZ10, and RZ20 are the latest additions to the RotoZip line of spiral saws. Each model has a universal 3-jaw chuck that fits any size bit, a wrenchless bit change system, a sealed switch to keep dust out of the tool, a soft-grip handle, and an adjustable foot. The RZ1 and RZ5 are the basic models, differing only in handle design. The RZ10 and RZ20 are the more advanced models that are powered by a 5.5A motor and feature variable speed control and a metal bezel. The RZ20 goes one step further to include an integrated LED light.
For more information, visit http://www.rotozip.com.