Contact Us

United States and Canada
Monday through Friday between 7am–7pm (CST) for live support
United States and Canada
Monday through Friday between 7am–7pm (CST) for live support

7 In. Medusaw™ Walk Behind Worm Drive For Concrete

Stand up to big jobs with the only worm drive walk behind concrete saw. Cutting long control joints is simple with the new integrated handle that adjusts to your height and folds easily for transport and storage. Our legendary SKILSAW® worm drive power and a pivoting pointer deliver unmatched precision and convenience. Used wet or dry, the integrated dust management system controls dust for cleaner cuts. A two-finger trigger reduces user fatigue and improves control. The all metal components featuring rust-resistant brackets and fasteners protect from corrosion for longer life. Armed with the MEDUSAW™ Walk Behind, you'll power through the toughest concrete jobs standing up. You can always count on SKILSAW®.


  • Worm drive concrete saw delivers a complete concrete cutting system with worm drive power and durability
  • Adjustable handle extends to optimal height and folds for easy transport
  • Wet/Dry dust management system controls dust for cleaner cuts and longer tool life
  • Two-finger trigger reduces fatigue and improves control
  • GFCI protection reduces risk of shock to user
  • Die-cast aluminum housings, guard and foot with rust-resistant brackets and fasteners resist corrosion for long life
  • Pointer wheel mirrors the blade kerf for accurate cuts
  • Large foot and oversized wheels for improved stability
  • Powerful Dual-Field™ Motor increases cooling and extends tool life


SPT79A-10 7 In. MEDUSAW™ Walk Behind Worm Drive for Concrete, vacuum hose adapter with clamp, water feed assembly, multi-function wrench, side handle and bag. Hose adapter fits sizes 3.5 cm (Euro typical), 1-7/8" and 2-½" hose ends.


Size Power Materials Cut Depth
Arbor Size 7/8" Amperage 15 Motor Gearing Worm Drive Geared Depth of Cut at 45 deg n/a
Blade Size 7" Motor Housing Material Aluminum Depth of Cut at 90 deg 2"
Cord Length 1.5 ft Foot Material Aluminum
Height 11.8" Gear Housing Material Aluminum
Weight 31.7 lbs.
Bevels Blade Other
Bevel Blade Location Left External Motor Brush Access Yes
Bevel Stops n/a Blades Included No Integrated Rafter Hook Not Featured
Preset Bevel Angle Detents n/a Blade Type n/a Warranty 180 day STAY TRUE Guarantee and 1 year limited warranty