I’ve long been a fan of Bonshus ball-end hex screwdrivers because they’re so much easier to use than angled hex keys.
Recently I bought a set of four metric drivers to use when I must dig into my K1c. Here’s the link on eBay if you want your own set: https://www.ebay.com/itm/145842806250?_skw=bondhus+hex+screwdriver+metric&itmmeta=01JQMWRDG786SH4TAQ4W67W68S&hash=item21f4e89dea:g:jhUAAOSwvodmczq6&itmprp=enc%3AAQAKAAABAFkggFvd1GGDu0w3yXCmi1d2JMJlSVaXuE7GwijdK9hxfWGrF13Hggw%2FDwe0UFdbKkBFuNsv0fR5gfDa%2BDOpPYBvAxEubtrnIRqvi0lAwNhzIJXKw8hxT%2FTNGNUi6KpJBijca7RJ4Y5%2BwblqB2vvvtN%2BkGgNyUW3c0cDXAiOEudDnX%2Bug5daWWhPqgEc0yloy5J44yNiDYtBTPG3HogEsO9pPZWk%2F0vK54lxBW5RWyr6NOWk4tV0zVKhikahrNwlEsfcJnsB3r7uEW%2ByYICM2mTcM1Phqwhf9bWX%2F%2BXO%2B8MO4eK%2Bbd2nBetSFZ1L1vmueHiuRqNd4gReiTTUE%2BavQy0%3D%7Ctkp%3ABk9SR7zY4Zy9ZQ