The ES-1964DS is a free-fall Electricians Scissor designed for heavy duty use and loose enough to allow fingertip operation. It is made of drop forged high quality chrome vanadium steel for greater durability. It is notched to strip 18 to 20 and 22 to 24AWG wire and one blade is serrated. A scraper and file are on the back of the blade. The 811490015043 electrician scissor has carbon steel loop handle.