Schröder | Insert Bit Square Recess No.1 Type_Jigsaw Blades Clear graduations laser etched on

Clear graduations laser etched on satin chrome finish for easy reading

and easy-to-read gauges

Thanks to exceptionally high quality awareness

Tempered steel offers durability and precision and can be re-sharpened

Schröder | Insert Bit Square Recess No.1 Type_Jigsaw Blades Clear graduations laser etched onSquare Recess Robertson Bits Square Recess Bit: No. 1 Length: 25 mm A Robertson, also known as a square or Scrulox screw drive is specified as ANSI Type III Square Centre and has a square shaped socket in the screw head and a square protrusion on the tool. Both the tool and the socket have a slight taper. As patents expired and awareness of their advantages spread, Robertson fasteners have become popular in woodworking and in general construction.