Set of 4 sealed ball-bearing nylon garage door rollers with 115mm stem

The roller has a lubrication groove to disperse lubrication over a long period. Long service life, low noise, cold temperature as low as -45 Celsius.5. Reduces garage noise with a precision ball bearing and nylon rollers are much quieter than original garage rollers. Applies to: Automatic garage door, arched garage door, solid wood garage door, anti-pinch garage door, cellular garage door, engineered garage door, remote garage door, villa garage door. 11.5 x 4.5 cm / 4.53 x 1.77 inches (L x Dia). Weight: 534 g. Package contents: 4 garage door rollers.