The Klein Tools' Heavy-Duty Ratcheting Lineman's Wrench is great for utility work. Its 3/4-Inch and 1-Inch x 1-18-Inch combination square socket works with the most common utility hardware. It also features two popular wrench sizes: 3/4-Inch and 9/16-Inch.PRODUCT FEATURES:- Bolt-through design allows bolts to pass through the socket - 3/4-Inch and 1-Inch x 1-1/8-Inch combination square socket for most common utility hardware - Bright yellow socket for easy visibility - Works on most common utility pole hardware, such as lag bolts, ''C'' clamps and suspension bolts - Offers two popular hex sizes: 9/16-Inch and 3/4-Inch - Heavy duty design