Perfect for rough scrubbing, and cleaning equipment. Plastic bristles are acid resistant to work on many surfaces with many materials. The 2-1/2 in. trim is securely set in the block. The 10 in. plastic block has some texture for a secure grip even when wet. The edges are rounded for a comfortable grip especially when scrubbing. The 10 in. block is a convenient size that fits within a 5 Gallon bucket for efficient application. For an extended reach use with threaded broom handle,