Allen wrench (Hexagonal key inside)

请使用项目预设参数，否则内六角精度可能会相差较大。适用于各类4mm六角扳手可用场所，主用于内6六角锁。Please use the project preset parameters, otherwise there may be significant differences in the hexagonal accuracy. Suitable for various locations where 4mm hex wrenches are available, mainly used for internal hexagonal locks. 更多通用锁钥匙可以进入以下链接寻找。 more universal lock keys can be found by entering the following link.https://makerworld.com/zh/models/597554#profileId-519602https://makerworld.com/zh/models/597613#profileId-519661https://makerworld.com