[DETAIL] Features: *Made of Chrome vanadium steelmaterial, high hardness and durability. *Multiple specifications to meet a variety of needs. *Uniform square hole connector, 1/2" (12.7mm) interface, suitable for AC electric wrench, lithium wrench, pneumatic air tool and other machines. Specifications: *Name: Impact Wrench Hex Socket Head *Type:1/2inch square interface *Material: Chrome vanadium steel *Color: Black *Optional size: 12mm,13mm,14mm,16mm,17mm,18mm,19mm *Length: 138mm(5.52inch) *Quantity: 1PC Package Contents: 1* Hex Socket Notes: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. [ATTRIBUTES] - Hign-concerned Chemical: None - Material: Chromium-vanadium Steel - Brand Name: LIXIU - Hign-concerned Chemical: None - Material: Chromium-vanadium Steel - Brand Name: LIXIU - Origin: Mainland China