Find durable electric sheet metal shear and nibbler options at Grainger to help you easily slice through flashings and metal roof sheets. Shop here for variable speed shears that can cut through up to 18-ga. steel and 20-ga. stainless steel, single-speed sheet metal nibblers that can bite into 14.-ga. steel and 16-ga. stainless steel, and other high-quality metal cutters. Count on Grainger to help you get the job done with a powerful electric sheet metal shear.