Specifications is_customized:Yes Model Number:M2 M3 M4 M5 M6 DIY Supplies:Metalworking Item Type:Nut & Bolt Sets Origin: China Certification:None Items Description Material: Alloy Steel (12.9 Grade) Specification: M2,M3,M4,M5,M6 Bolt, nut About delivery time: we will deliver the goods within 24-48 Hours after your payment (delivery time is not guaranteed during holidays and Spring Festival) FAQ Q: If i fail to receive the item in estimated time ? A: Don't worry ,because sometimes there will be some shipping delay because of holiday or wrong address, pls contact the seller by e-mail, we will help you contact the shipping company to solve it successfully and finally get it . If you can't receive it, we will full refund or resend it for you. Q: What could i do if i receive the broken item? A: We will issue you the refund or send a new one if we get the broken picture of the item from you . you don't have to open a return request because you could help us dispose it ,many thanks ! Q: I am not satisfied with the product,what should i do? A: Please contact with us in time, we will help you solve it. Return Term In case you received a defective item, the customer has up to 7 days from date of receipt to request for refund or exchange for a new one. In case you received a wrong item, Items must be returned in its original and unused condition & must also be in its original box and packing. Please read all description provided as a guide before you bid. While every step has been taken to ensure that we ship out correct item, there will be occasion when you receive items that are different from the description . In such case, we ask that you contact us immediately so we may remedy the situation. After Service 1. Do not hesitate to contact us any time before and after your purchase; It is our service tenet to provide God-like to customer service. 2. If you are satisfied with our products and services, please give us a five-star feedback so that we can give me greater motivation.