Known to be a great performing shear at an affordable price, the Centrix® Roc-it Dog™ is one of the most popular shear brands in the professional salon industry.The convex blades are designed to provide smooth, effortless cutting. The offset grip provides a relaxed "open hand" grip for low stress cutting and improved cutting speed. The tension knob/tension screw is specifically designed for the duo to extend the life of the blade while being easily adjustable for each haircut.