Use 3/4" molding for plywood, and 13/16" molding for laminated sheet goods. 3/4" wide molding requires a 1/16" kerf. 13/16" molding requires a 5/64" kerf. Wraps around a radius as small as 1-1/2". To fit a 90 degree corner, just clip the ribbing that fits the groove.Available in four different colors;Black, Brown, White, and Tan. The 3/4" T-moulding has three ribs. The 13/16" T-moulding has three.