Gyokucho's Dozuki Razorsaw A carries a 0.3 mm thin blade held dead straight by a full metal back, built for finishing work in carpentry and wood crafts where a spined Japanese blade gives a delicacy no backless saw can. It cuts on the pull stroke, tracking a knife line through tenon shoulders and trim with almost no kerf.
Two blade lengths. The 240 mm is the everyday size and comes with either a traditional rattan-wrapped handle or an EVA grip; the 270 mm adds reach for wider stock with the rattan handle. Replacement blades for both lengths keep the handle in service for years.