Please read the profile before asking questions about purchases. We will refrain from responding to inquiries about items already described. When using the bundling feature, please apply without changing the price. We will send you a message after applying the combined shipping discount, so please proceed with the purchase then. The chain and the PP tape for the core are made in Japan, and the plastic parts (adjusters) are YKK. This is a half-choke collar for large dogs. Width: 2.5 cm Collar size: Approximately 34-54 cm (chain and metal fittings are not included) Chain size: Length 22 cm, weight 60g, inner diameter of the split ring 21 mm D-ring inner diameter 20 mm Before use, always check for any damage. If there is any damage, do not use it and replace it with a new collar. As this is a handmade item, the stitching may not be perfect, and there may be slight deviations. Please purchase only if you understand this. In the event of an accident or trouble during use, we cannot be held responsible for any guarantee or liability. Shipping will be by regular mail, so there is no guarantee, and it will be delivered to your mailbox. For small items, we may affix stamps and drop them in the mailbox without taking them to the post office counter. In the case of shipping from the mailbox, we will send a "shipping completion email" when the item is dropped in the post office mailbox, regardless of whether there is a collection on weekends and holidays.