3 PIECE TIN SNIP SETAVIATION TIN SNIPS ARE PRECISION TOOLS & ARE ONLY DESIGNED TO BE USED WITH THIN GAUGE METALANY ATTEMPT TO CUT THICKER GAUGE METALS, BANDING MATERIAL, OR WIRE WILL RUIN THEMTHEY ARE DESIGNED TO TRIM MOST NON-FERROUS METALS, INCLUDING ALUMINUM, TO .040" THICK AND FERROUS METALS, INCLUDING STEEL, TO .030" THICKIF USED IN THEIR INTENDED APPLICATION, THE TIN SNIPS WILL GIVE MANY YEARS OF CAREFREE USETHE 9 1/2" GREEN HANDLED SNIPS ARE COMMONLY REFERRED TO AS RIGHT-HAND & CUT IN A CLOCKWISE MOTIONTHE 9 1/2" RED HANDLED SNIPS ARE COMMONLY REFERED TO AS LEFT-HAND & CUT IN A COUNTER CLOCKWISE MOTIONTHE 10" YELLOW HANDLED SNIPS ARE DESIGNED TO MAKE SHORT, STRAIGHT CUTSIF YOU ARE TRYING TO MAKE LONG, STRAIGHT CUTS, IT WOULD BE BETTER TO USE A REGULAR PAIR OF TIN SNIPS, NOT THE AVIATION STYLE