Style “B” Alignment Inserts are specifically designed for match plates & match boards for automated molding machines. With both halves telescoping and inter-locking at the parting through the diameter, these inserts will create the deepest match buttons possible and can be mounted on either side of the cope and drag. Our 1.5 B & 2.5 B Alignment Inserts can be modified to 3/8 “or 1/2” plates, respectively. Our gray, Zero Tolerance Alignment Inserts are designed for green sand only, Our Style “B” Alignment Inserts are made out of a tough non-stick acid resistant plastic, and are available in three different sizes, with three different depths.