Protect your regulator hoses from kinking. A broken and leaking hose could be a life-threatning situation. .55 Inch (1.4cm) Diameter to keep your hoses from twisting, flattening or bending beyond their limits. Flexible, perforated sleeve provides an extra layer of resistance and protection. Available in colors to coordinate or contrast with your dive kit. An inexpensive accessory that helps preserve your equipment, and may even save your life. Package Includes: 4 Protector. Choose colors. Note: Hardness and softness will be influenced in different climate. If it's hard to fit on low pressure hose, you can put the protector into boil water for 5 minutes.