The Oster Detachable Hair Trimmer Blade meets the unparalleled precision and performance Oster Professional is known for. Handcrafted out of high carbon steel, the detachable trimmer blade is ultra sharp to stand the test of time. This size 3.75 blade cuts hair to a length of 0.5 inches long. All blades cutting surfaces are sharpened, finished, and tested with proven Oster proprietary processes. Carrying the Oster Professional name, the Oster Detachable Hair Trimmer Blade will not disappoint