DURATECH Telescoping Basin Wrench, Sink Wrench, Adjustable 3/8'' to 1-1/4'' Capacity Jaw with 10" to 17" Extendable Handle, for Tight Space - Amazon.com
25 Types of Wrenches and How to Choose
Husky Basin Wrench 16PL0127 - The Home Depot
Corner Wrenches – MCC Professional Tools – MCC International