Under the Offensive Weapons Act 2019, it is an offence to sell knives, knife blades, Corrosive Products or any other product that may be perceived as an offensive weapon, to persons under the age of 18. Upon delivery, you will be asked to verify your age with a photo driving licence, passport or a proof of age card, such as the PASS card from the national Proof of Age Standards Scheme.10 blades for Linex CK400 knife. You must be 16 or over to buy knives or blades. Please refer to our terms and conditions for more information.