Check the listing for details. Metal O-ring. Condition: New. Listed at 1.00 USD. ** Notice **This product is only for customers who are purchasing our other products such as camera cases and straps.If you want to order this product without purchasing our half cases or straps, the minimum quantity is 300 for free shipping.Under than that quantity, we need to charge you the shipping cost. Please be noticed. Thank you. Arte di manoHandcrafted by JnKMetal O-ring for strap connectingreplacement part / 2 pieces 1set.* metal O-ring onlySize : Inside diameter - 13mm / Outside diameter - 16mm.It is for personal use.Bit it is not recommended in the general case because the replacement of parts may hurt the leather or the replacement itself may not be possible if the connections are thick.*Strap is not included The O-ring used by Arte di mano is not a normal size, but a special size specially made for strap production. It is important to use the proper size of the strap's O-ring because it is difficult to connect if the size is too small, and if the size increases, it may interfere with the use of the camera or case. For this reason, it is a nickel-coated metal ring made of suitable size due to long experience.Shipping : Fedex shipping 1-3 business days(If you order this item with any of our leather products,this will be shipped with the leather product after lead time.)