GEARWRENCH 1 2 Drive X Core? Pinless Universal Joint Impact Extension Set 6, 9 & 12 Disposable 2x Help It Clean Up Contaminant Bag Tough Impact Resistant Polycarbonate 2x Help It Clean Up Contaminant Bag 22x32cm 3 high velocity fan speeds for varying levels of air flow up to 4500 CFM X Core pinless joint design for increased strength and durability Universal joint extensions can be used with any socket style 30 maximum operating flex angle Smooth 360 rotation for easier access Chrome molybdenum alloy steel (Cr Mo) for exceptional strength and durability Black oxide finish to resist corrosion High visibility laser etched markings provide quick size identification Meets or exceeds ASME specifications and extensions provides the long lasting strength and capability needed to take on the toughest automotive and industrial applications