QLT By MARSHALLTOWN 911 3-1/2-Inch by 4-1/2-Inch Inside Drywall Corner Trowel with Plastic Handle
Marshalltown 16111 3-1/2 X 4-1/4 Drywall Inside Corner Trowel with Plastic Handle  is formed from one piece of flexible stainless steel. It features a plastic handle, and blade that is set with an 103 degree angle that flexes to 90 degrees for finishing corners. Use it to embed tape and smooth out the final layer of mud to taped corners.