Hello setsu, the length is about 10cm and width is about 12cm (longest side).

Hello Kevin, this hair pin is available anytime, we set the maximum order is 10 pieces in one purchase, do you want more than 10 pieces?  If so, we can adjust it for you and give you extra discounts, please submit ticket (with product link & request) to our Support Center and let my teammates help you directly.  n_n