These elegant shoulder planes are vital tools for trimming and improving cut joints, particularly shoulders, rabbets, tenons, and grooves. The Bronze lever cap is higher for better grip and closer to the blade bevel for better support. The mouth geometry allows for better chip clearance, while the adjustable mouth and locking screws are large and convenient. The mouth adjustment screw is captured in the front shoe and threaded into the body so it adjusts the mouth both when turned in and turned out. The captive-nut blade adjustment is very positive. Bodies are cast from Ductile Iron, precisely ground flat and square - an essential feature for a shoulder plane. Blades are A2 Tool Steel, hardened to Rockwell 60-62, cryogenically treated and double tempered to hold a very fine edge for a long time. Blades are bedded at 18 degrees, beveled at 25 degrees, and .005" wider than the body to ensure crisp, 90 degree cuts.A versatile, general purpose Shoulder Plane with nice heft and the best size to start with. This all-metal Shoulder Plane is based on the Record 073, which in turn was based on a Preston model. Body is 8¼" long x 1¼" wide. Blade is 1¼" wide x .140" thick. Weight 4 lbs.