Most 'ambidextrous' shears address handle shape but ignore blade orientation. Standard shears block a left-hander's view of the cutting line, and natural left-hand squeezing pushes blades apart, causing material to tear. PROGRADE fully reversed the blade orientation so the cutting line is visible from the left side and optimized pivot geometry for left-hand mechanics. The handle shape is engineered for left-hand contours — not a mirror image of the right version, but a completely reengineered shape.