This deck scrub features a 10-inch wood block with stiff polypropylene bristles that are chemical resistant and retain cleaning solutions effectively. The synthetic filament withstands solvents and acids, making it suitable for general scrubbing tasks. The scrub is BPA free and has a 3/4-5 ACME thread, a standard thread form in the US, ensuring compatibility with various handles. Designed for durability and efficient cleaning, this scrub is ideal for outdoor deck maintenance and heavy-duty surface scrubbing.