Razor Sharp Convex Edge Traditional Straight Handle Premium Stainless Steel Zipper Shear Case Lifetime Warranty The JW S4 series shears are a concept made in performance heaven. They are great for detailed work or light hair cutting. The straight handle design makes it possible to use both sides of the shear or to change the way the shears are held for a greater degree of freedom. The flat screw does not interfere with the cut when using a comb and can be easily adjusted.