Wahl Competition Series Blades are made in the USA from premium heat-treated, high-carbon steel for a Rockwell Hardness rating of 64. Wahl blades are treated with a special hexavalent chrome finish for superior rust and corrosion protection that prolongs blade life. The smooth cutting design leaves a show-quality finish.
Fits Wahl Sterling #8779 Mag Trimmer. Fits Wahl Beret #8841 Trimmer. Detachable Trimmer Blade Set (Snaps Off & On). Blade Installation Instructions: Carefully align the slot in the upper blade over the white nylon drive ball of the trimmer?s tension spring. While holding the blade set in place centers and squared to the trimmer body, carefully tighten the two blade screws.