Klein Tools Slotted Impact Flip Socket 66044 3 in 1 SAE 12 Point (1 2 Square Drive Steel Eyebolt Hardware Fastening Adapter) Freud Accessories Traceable Calibration: Certified to meet Traceable Calibration: Certified to meet ASME standards with a guaranteed ±4% accuracy rating for regulated industrial compliance nominal 5 8 inch hardwood cabinet plywood routinely measures exactly 19 32 inch Brand Manufacturer Klein Tools® Model Part Number OEM SKU 66044 Tool Classification System 3 in 1 Slotted Reversible Impact Flip Socket Core Metallurgy Material Heat Treated Forged Impact Steel Surface Protective Finish Black Manganese Phosphate Corrosion Resistant Finish Primary Input Drive Interface 1 2 inch Square Drive (Includes 1 2" to 3 8" Drive Adapter) Integrated SAE Socket Sizes 9 16 inch and 3 4 inch Hex Socket Point Profile Geometry 12 Point Deep Well Profile Fastener Safety Retention Cross Hole Pin Alignment Detent Retention Manufacturing Quality Standards ASME B107 Power Impact Wrench Conversion: Operating on standard 1 2 inch square drive impact wrenches or utilizing the included 1 2 inch to 3 8 inch adapter