Brush Nylon - SS/DS - Male Dia 4" - Schaefer Material: High-performance tool steel for

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Brush Nylon - SS/DS - Male Dia 4" - Schaefer Material: High-performance tool steel forThe product 43764 Schaefer Nylon SS DS Male Brush Dia 4" (1EA) appears to be a single stem double spiral tube brush manufactured by Schaefer Brush. Here are some key details: Brush Diameter: 4 inches Brush Type: Nylon bristles Stem Type: Single stem double spiral (SS DS) Connection: Male thread Typical Use: Often used for cleaning internal surfaces of tubes or pipes Overall Length: Approximately 7 1 4 inches