Proto J5317M Socket 1 2 in Drive Size, 17 mm Socket Size, 12 Point, Deep, Chrome PR3FG Recommended Plumb Bob: 590n Handle Recommended Plumb Bob: 590n Handle Type Folding Item Double Duty Oil Gauging Tape Measure Measurement Type SAE Case Color Red Chrome Blade Color Silver Blade Coating Nickel and Chrome Electroplating Case Material Steel and Plastic with Grounding Strap Case Type Open Blade Material Steel Stud Markings No Series Atlas® Chrome Clad® Nubian® Standards NIST Certified Includes Grounding Strap Numeric Format Fractional Handle Color Black Handle Material Plastic Blade Type Single Sided Numeric Marks Feet 4 kW (at 220 to 230V AC 50 60 Hz AC 3e) Drive Size 1 2 in SAE AS955 Features Ideal for Use On Stubborn or Damaged Fasteners