The Oster 76 Size 1 is a detachable blade for barbers and stylists working at a nominal cutting length of 3/32 inch / 2.4 mm. Its applications include clipper-over-comb cutting, medium fades and removing bulk. That combination makes it a useful working size when the haircut calls for more retained length than the very close blades in a detachable set.

Oster uses high-carbon steel and manufactures the blade in the United States. The steel is hardened to Rockwell C 62–66 before undergoing cryogenic treatment, and the cutting surfaces are subsequently sharpened and finished. This construction supports the blade's role as a reusable cutting assembly for a professional clipper.

The size 1 fits Oster Classic 76, Octane, Model One, Model 10 and Outlaw clippers. Match the blade to the appropriate clipper and use its removal and installation procedure when changing cutting lengths. After each use, remove accumulated hair and apply blade lubricant according to Oster's maintenance guidance.