●High quality nylon shaft,Great value for money. ●15 Packs in Total (5 Sets) + 20 PCS Spring O Rings. ●Multiple sizes and colors for your choice. ●Please note that about size item measure by hand, it could be 1-2cm different.Color and brightness may differ a little due to different computer monitors or other factors. Hope you can understand. ●We strive to produce the best product and provide 100% satisfaction to every customer. We offer a 6-month full refund and a 12-month product replacement guarantee, making it a risk-free purchase for every customer. Our customer support team is always here to assist you.