Curved, bendable design simplifies tough pipe cleaning tasks. Stiff, polypropylene bristles effectively remove dirt, dust and debris without scratching surfaces. Comfortable dual-design handle features an ACME-threaded internal socket. Bristle Material: Polypropylene; Bristle Length: 1 3/4 in; Brush Length: 7 1/2 in; Handle Length: 3 1/2 in.