1-5/8" Cutter Width. Includes (1) 12-508 Cutter Blade. Ideal for planing end grain and plastic materials 12-920 block plane has a fully adjustable cutter resting at 21° . Gray, cast-iron base with precision-ground sides and bottom Finger grips machined into sides make single-handed use easy Hardened, tempered steel gives precision-ground cutter edge durability Cutter adjusts for depth and alignment, offering precise control Durable epoxy coating for long-lasting protection Quick-release cam-lock makes iron removal easy