» it's a very refine size... it needs a delicate hands & patience to work with. * Since it is extremely small in diameter & thin in gauge, do NOT over-open it, as this will distort the ring. Try to open it by using a "round nose plier ", gently slot in between the 2 rings :) * Due to the black plating matter, you may find a few of "them" stick together. They're perfect. You can separate them easily with bare hands/ plier. __________________________________________________________________ 10% off Bulk Quantity Order Discount applies to order: *excluding shipping fee. - 10 packs of a same item ( custom order request ). - USD$80 & above in 1 order. ( excluding shop's special sales / events ); with free upgrade to Registered Airmail.