Check the listing for details. Water valve tool key (turns indoor water valves on and off) 2 per order, 2 sizes. Condition: New. Listed at 9.95 USD. This new water valve tool key made of Tough PLA hard plastic provides a strong, durable, and long lasting tool. This compact and light valve turning key is ideal to easily turn your indoor water valves on and off. Two sizes are available. The larger size (Manabloc key) has a diamond shaped opening of .5 inches x .375 inches (tool dimension is 1.5 inches long x 2.87 inches wide x .56 inches high and weighs only .4 ounces). The smaller tool (older system key) has a diamond shaped opening of .375 inches x .25 inches (tool dimension is 1.5 inches long x 2.25 inches wide x .375 inches high and weighs only .2 ounces). Both allow you to keep the key right on the valve for quick and easy access. Please measure and then select the tool size that is designed for your system. There are two tool keys included in each order.