Most jigsaws have a hard time staying on course. Hard material and curves can easily cause the blade to deflect, resulting in time consuming re-cutting or sanding. Trion jigsaws are designed with adjustable carbide-tipped jaws that work with the blade clamping system and back-up bearing for triple blade guidance that keeps the blade perpendicular to the shoe at all times, even on curves. The barrel grip PS 300 is designed to fit your hand with a low center of gravity.