This stanley plane set comprises the following two planes no4 sweetheart plane9 12 block plane the stanley sweetheart premium no4 bench plane is a great choice for woodworking projects of all types and sizes the base and frog are cast as one to allow the plane to run smoothly over the stock and the heavier body increases performance the blade is made of a2 steel for increased edge retention and it has a patented lateral adjustment locking feature and solid brass adjustments for smooth operation