Please read the profile before asking questions or making a purchase. We will refrain from responding to inquiries about information already stated. When using the bundle feature, please submit your request without changing the price. We will send you a message with the discounted price after combining the items, so please proceed with the purchase then. The chain and PP tape for the core are made in Japan, and the plastic parts (adjusters) are from YKK. Width: 2 cm Collar size: Approximately 25-38cm (excluding the length of the hardware and chain) Chain size: Inner diameter of the round ring is 18mm, wire diameter is 3.0mm Length: Approximately 18cm, Weight: 40g Before use, please be sure to check for any damage. If there is any damage, please do not use it and replace it with a new collar. These are handmade items, so the stitching may not be perfect, and there may be slight misalignments. We appreciate your understanding and ask that you only purchase if you accept these conditions. Please note that we are not responsible for any accidents or troubles that may occur during use. Shipping will be via regular mail (unregistered), and will be delivered to your mailbox without insurance.