You won't get any sharp edges or burrs with MGP Pre-Cut Alignment Tab Shims. Made from corrosion resistant 304 stainless steel, MGP tab shims eliminate the need to hand-cut extra shims and MGP tab shims are totally reusable. Order a tab shim kit equipped with a wide range of shim sizes and reduce the need to stack. MGP stocks regular and over-sized slots in A, B, C and D sizes. Custom sizes AA, E, G and H are available - all up to 12" thick. Having the right size shim will save you time and money, and more importantly, will provide you with a more stable alignment.