The 20 Inch variable-speed scroll saw is engineered to operate very quietly and smoothly for utmost precision. It has tool-free blade clamp£¬ which facilitates for quick and easy blade changes. Convenient placement on the liftable arm of the dust blower£¬ on-off switch£¬ electronic variable speed and blade-tensioning lever on the front of the upper arm assures easy adjustment. Arm design of saw aids to keep the blade perpendicular to the work£¬ thus reducing over or under cutting. Saw arm lifts so that blade can be easily threaded through the material for inside cuts. It has oversized cast-iron table for providing excellent material support and has the ability to bevel 45 degree to both the left as well as right. Tool featuring double parallel-link arm design£¬ minimizes vibration and noise for extremely accurate cuts. It comes with a hex wrench and blades.