The Best Pair of Scissors Ever The 7280 Scissor is a new generation of professional tailoring shears for home dec sewing, drapery workrooms and even the DIY Seamstress.. The blades are made of AUS8A stainless steel (3.7 4 mm. in thickness) and hardened up to 58+/-1 HRC. The shears are elegantly mattefinished and equipped with a patented duplex interlock fastener that prevents the screw from becomingloose. The fastener is also heat treated and hardened up to 45 +/- 1 HRC. The 7000 Series is available in 8different models Kai 7230 9 inch Kai 7240 Serated Kai 7250 Left, 7250 Pro 10 inch 7280 11 inch Pro 7300 12 inch Professional Shear. In my book these are the #1 Scissor for 2018. They have a proven track record with 18 years sewing draperies and slipcovers.