Components Standard Retsun door brush set A standard set includes: 1 pc brush sheet 1 aluminum housing 4 screws Ideal life Comfort life factor With a concise and delicate design, Retsun 4“door brush helps enhance a better improvement for indoor environment. Screw fixing design also prevents it from being scratched off by the home pets. Inserting brush can be replaced easily, saving your valuable time to measure and mount again. Widely adapted Various locations Retsun door brushes are widely adopted by our customers to mount on various locations, home doors panels, garage doors, shops, etc. For different floor situations With wonderful flexibility, Retsun door brush sweep can work perfectly on most floor conditions by filing the gaps tightly. Rich choices Each color has different quantity packaging Retsun provides up to 12 choices of packaging, save your cost, your valuable time and reduce environment impact. Different styles Here on our Amazon store, we provide various tyles to meet our customer demands: By material:　PP hair, horsehair By layer: Single, double By hair height: 0.98", 1.5", 2.16", 2.5", 2.75“, 3", 4", and the tyle are still increasing. By housing color: black, brown, also are increasing.