The heart of the cutter is its hollow-ground Sheffield tungsten steel rotary blade, self-sharpening for a long life of clean, precise cuts. The housing fits the hand comfortably while completely, and safely, enclosing the cutting blade. Die-cast alloy construction in the cutting head and end supports adds strength, maintains alignment and helps guarantee years of service. Double steel tube suspension guides the cutting head with the stability essential for accurate, repeatable cuts. Four nylon bearings in the head further assure quiet, effortless cutting. Transparent clamping strip automatically holds material in place without risk of damage. Convenient cut guide lines help align your work. Extruded aluminum squaring arm incorporates a combination inch/metric measuring scale and accepts the included Side Guide. High pressure laminate in a handsome photo gray keeps the baseboard warp-free, hard-wearing and easy to clean.