The Flip impact socket combines two sizes in one socket. The socket is designed for use with an impact driver including Klein's compact impact wrench (Cat. Nos. BAT20CW, BAT20CW1). Easy-to-use flip feature allows for quick changes between sizes and reduces the number of tools in the tool bag. Klein® 66073 Flip Impact Socket, 4140 Steel, 6-Point, 15/16 x 7/8 in Socket, 3.25 L x 1.368 H x 1.368 W in