Features and Benefits:Compact profile to fit into tight spacesOne piece design to withstand power tool torque1-3/4" Hex Fastening Depth to fit most utility connectors and hex boltsUse with Hand Tools or Power Tools3/8" Square DriveFeatures a pin detent design for maximum socket retentionFits Shear bolt connectorsFits pad mount transformer connectionsCan be used in other hex bit connectionsThe MILWAUKEE® SHOCKWAVE™ Linemans 3/8" Drive 6mm Hex Bit Sockets are designed to be the most durable with a one-piece design that better withstands the torque of power tools while providing the best access in tight spaces. These hex bit sockets have a 1-3/4" hex fastening depth to fit the most common connections and hardware utilities and electricians will encounter. The overall compact profile of these hex bit sockets will fit more connections. It can be used with hand tools or power tools.