SquareRobertson Screwdrivers & Nutdrivers for sale

History of Square & Phillips screw drivers slot robertson screw A Robertson screw, also known as a square screw or Scrulox, is a type of screw with a square-shaped socket in the screw head and a corresponding square slot machine demo play ElectriPro 6 Robertson #1 screwdriver with ergonomic handle and 1000V insulated shaft

slot presentatie His specially designed square socket screws and the driver gave a tighter grip than any usual slot and rarely slipped Robertson worked hard