Hi there Vendel,
Thanks for posting on this forum with your great question. The screwdriver handle equipped in the Mako Driver Kit features a magnetic bit socket. When you insert a bit into the socket, the bit should comfortably fit into the socket. It may wiggle a little in the socket, but it shouldn’t feel loose or wobble around in the socket too much. If you believe you received a faulty product, please feel free to contact our [https://help.ifixit.com/|Customer Support] team and they’ll handle it from there. Thanks and happy fixing!
Justin