Dremel MS20-01 Moto-Saw Variable Speed Compact Scroll Saw Kit Dust port adapter keeps line-of-sight clear and work space clean Auto tensioning quick-change mechanism for easy accessory change and optimal blade tensioning Detachable coping function for handheld use to take the tool to the work piece Variable-speed control for optimal cutting in a variety of materials Fast-clamp base attaches to various tables, benches and surfaces Blue edge guide locking levers illustrated on packaging are not included in the kit and do not affect performance of the tool