1.The hair sticks are made by hand with natural yak horn. hand work will be not as perfect as machine work. 2.wide and length will be a little deviation. whole yak horn is camber, so the hair stick is not straight,a little camber will be better for updo, and chignon will not easy to disperse. 3.there can not have two pieces same texture natural yak horn in the world,the color is random. 100% natural yak horn, a very very little blemish is allowed.4. when receive this package, you can coat some hand cream for this item to protect the horn material, avoid more cracks.