Not having the correct tools can make even the simplest job a nightmare. Cutting silicone coolant hoses or catch can hoses with a knife is a pain and makes a mess of your hoses. Your cuts almost never come out straight. If your knife isn*t perfectly sharp, it will pull on the embedded braiding, leaving it weak. Finally, if you leave any flaps of material hanging off, or slip when cutting, you risk future tears. The best method for cutting hoses or lines straight and clean is with a tool made specifically for the job * a tool like this Mishimoto ratcheting pipe and hose cutter.----This ratcheting hose cutter makes short and tidy work of cutting plastic pipes, silicone hoses, or rubber lines for fuel systems, catch cans or vacuum systems. Our carbon-steel blade smoothly slices through lines and pipes, leaving a straight, flat, and burr-free cut that won*t tear or fail down the road. The ratcheting mechanism makes cutting even the thickest line easy and safe, while the single-finger release mechanism makes repeat cuts fast. The Mishimoto ratcheting pipe and hose cutter cuts hoses or plastic pipes up to 2.5 inches and is suitable for PCV pipe, silicone hoses, and rubber/polymer lines. Like all our Mishimoto tools, this ratcheting hose cutter is backed by our Mishimoto Lifetime Warranty.