Contractor Quality. Fits Robertson Screws. Machined from high quality chrome vanandium molybdenum tool steel. 60.33 average Rockwell hardness. Available in bit sizes #1, #2 and #3 with a 2" length.
8X BIT INSERT-SQUARE DRIVE #1, 2IN L 1/4 IN SHANK
BIT INSERT-SQUARE DRIVE #2, 2 IN L 1/4 IN SHANK
8X BIT INSERT-SQUARE DRIVE #3, 2 IN L 1/4 IN SHANK