With the Jonard Tools AST-200 CableSaber Armored Mid-Span Cable Slit & Ring Tool (4 - 28.6mm), you have the ability to adjust the blade depth up to 5.5 mm (0.216") for precise and effective cuts without any damage to the internal fibers. The precision steel blade is tough enough to cut through even the most challenging materials. This tool can be configured for longitudinal slitting or radial ringing, making it suitable for cables ranging from 4 mm to 28.6 mm (0.157" to 1.125") in diameter. The aluminum shaft provides stability and prevents spiraling while slitting or ringing, and the shaft housing acts as a handle, offering increased leverage for easier use. With a simple thumb screw, you can quickly adjust the blade depth by hand. Made from rugged anodized aluminum and steel, this tool is designed for maximum durability and backed by a lifetime warranty.