Inside-corner drywall trowels embed tape and smooth mud along inward angles where drywall sheets meet. Their blades point up toward the handle to create a form that shapes drywall along inside corners.

Outside-corner drywall trowels embed tape and smooth mud along outward angles where drywall sheets meet. Their blades slant down toward the handle to create a form that shapes drywall along outside corners.

Corner bead clinchers seat and center the trim that reinforces and finishes the outside corners of walls where drywall sheets meet. Their right-angle frame fits along the corner bead, and their pincers extend to crimp the bead when the clincher head is struck with a mallet. This secures corner beading without requiring nails or staples.