The Multi-Trowel adjustable trowel is a godsend for those who work on uneven surfaces. It will help you perfectly level a dome or rounded wall. It has a 16-inch long steel blade with rounded corners, allowing it to perfectly adjust to any surface shape. Stainless steel for the blade, aluminum for the adjusters, and the handle is fiberglass reinforced plastic. Even the grip is made of marine grade vinyl for maximum comfort. Drywall, plaster, concrete, shotcrete - this trowel can handle any material. In the maximum bent position you get an 8-inch radius, in the convex position you get a 10-inch radius, and if you turn the handle you can get a radius of just 5.5 inches.