NN-48 Nylon Tube BrushTube brush with continuous length of galvanized steel wire is a sturdy cleaning option for hard-to-reach spaces. A built-in eye-loop allows you to keep a firm grip while using the brush. A single spiral of nylon-fill bristles cleans thoroughly. Nylon bristles provide easy, scratch-free cleaning. Bristle Diam: 0.0100 in; Bristle Material: Nylon; Brush Length: 3 in; Diameter: 1/2 in; Handle Material: Metal; Handle Type: Loop; Overall Length: 8 1/2 in; Stem Diam: 1/8 in; Weight: 0.03 lb.