One time use chip for Epson Expression home XP-231 XP241 XP431 series printer . 100% Quality warranty! We believe you will like our product . Compatible with original cartridge number: T2971/T2962/T2963/T2964 Please Note: Please order according to your cartridge model! Different area may printer model is same but cartridge model is different. If so will can not use as the chip will be different. Ship to worldwide via post air mail with tracking number. Item Include1set* one time use chip SHIPPING1. Shipping to worldwide. If send by post air mail usually to Europe within 15 days after sent out. To USA we will send by ePacket and usually after sent out about 10 days can receive. 2. Orders processed within 24-48 hours of payment verification.3. The images shown are the actual item and photographed by myself. 4. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season.5. If you have not received your shipment within 30 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction! PAYMENTS1. Payment must be made within 4 days of product closing. (Non-payment may result in a UPI (Unpaid Item) being put on your account. .