ADJUSTABLE - Blade depth can be adjusted to precisely match jacket thickness. MUTI-USE - Unique design lets you swivel the blade to allow circumferential, longitudinal, spiral and window slits. PREMIUM DESIGN - Spring-loaded brace firmly secures large round cables to the blade for a controlled cutting action. INSULATION REMOVER - Cable holding bracket has an integrated sharpened edge for removing insulation. SPARE BLADE - Comes with a spare blade in handle.