Designed in collaboration with Ellerbe Becket Architects (Minneapolis), the cast bronze skate deterrent is designed to be inserted into grout lines/expansion joints of granite block (or cast block) during the construction phase. Locking pins mechanically fix the part to the substrate. Blade thickness below surface is 6.35mm, then expands to blunted 9.525mm for safety. Part requires 101.6mm vertical and 101.6mm horizontal clearance.