Schluter-RONDEC-STEP is a finishing and edging profile for ceramic tile and dimension stone installations on countertops and stairs. The profile features a trapezoid-perforated anchoring leg, which is secured in the mortar bond coat beneath the tile. The top of the profile features a symmetrically rounded edge with 1/4" (6 mm) radius, which matches the Schluter-RONDEC profile, while the vertical leg of the profile hides the exposed edge of the sub-assembly.