Quick release knob: Simply squeeze the buttons and pull the knob off to change the kitchen roll. Extra-strong mounting bracket: Chrome-plated to prevent rust. Mounting screws included. Stainless steel rod: Extra durable stainless steel rod. Prevents unravelling: A tension ring holds the roll securely in place so you can pull off one sheet at a time. Manufacturer's guaranty: 5 years., Weight: 1.1 lbs., Manufacturer: simplehuman