These 15" planers are equipped with a pedestal-mounted thermal-overload safety switch, cast-iron extension wings, an enclosed cabinet stand, two-speed gearbox, and a built-in mobile base. You’ll find everything you ever wanted in a 15" planer, including an affordable price. PLEASE NOTE: For machines manufactured before March 2015, order the D4018 for replacement carbide inserts. For machines manufactured after April 2015, order the D3379 replacement carbide inserts.