for Complete Cleaning: 3/4inch copper tube brushes - perfect for HVAC pipes, plumbing drains, gas lines, and vent cleaning. Tackle any pipe size with this versatile set. Industrial-Grade Copper Bristles: Hardened copper wire bristles effortlessly scrape away rust, mineral buildup, and debris without damaging pipe . 30% longer lifespan vs. steel brushes. Proven Time-Saver: Deep-clean 2x faster than manual scrubbing. Reverse-spiral bristle pattern captures debris for cleaner workspaces. Ideal for plumbers, HVAC , and DIYers. Durability : Industrial-grade construction withstands heavy daily use. Please note: There may be slight color differences or variations in the actual product, but this does not affect its use. Please do not mind this. Thank you! Color: Blue Material: Metal Package Contents: 1 x Copper Tube Cleaning Brush Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.