Overview Reviews Product Description The Irwin combination square is constructed with a durable cast zinc body and a rust-proof stainless steel blade.It's black, precision-etched scales are perfect for marking 90° and 45° marking and transferring measurements. Irwin Tools Catalog Product Videos Custom Field Manufacturing country CN Product Reviews Write a Review Write a Review × Irwin 12" Metal Combination Square 1794469 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *