This is for gyms and those who want to buy in bulk. You are welcome to sell them at your gym. Normally 990 yen per piece → 770 yen per piece in a set. Some stores sell them for 1100 yen in their physical stores, so the selling price is up to you. Feel free to ask if you have any questions. The brush head is about 6cm, slightly larger than a typical brush, making it recommended for those who want to scrub slopers and holds vigorously! A high-quality brush with approximately 14,000 boar bristles densely planted. The grip is plastic, so you don't have to worry about damaging rocks or holds. The handle is also strong and won't break easily.