Top class convenience at an affordable price the gst 90 be professional jigsaw offers 4 speed orbital action for smooth to aggressive cuts variable speed dial appropriate for the material you cut and a powerful 650w motor the steel footplate wo sds offers 30 more rigidity compared to the gst 75 be making the tool easier to control and more likely to produce a smooth cut the blower airstream keeps the cutting line free of sawdust this can be switched onoff for external dust collectio