the present invention is directed toward a quick attach and detach mechanism for a tool attachment such as a router attachment for a router . the attachment system includes a mounting adapter which may be integrally formed with the router housing or attached to the router housing as a bolt - on plate . the system works by vertically installing the tool attachment with the mounting adapter and then twisting to secure the tool attachment to the mounting adapter . a rotational lock is provided to prevent the tool attachment from inadvertently backing off or coming loose . this lock can be manually actuated to allow for quick detachment when desired . the tool attachment system is shown in association with a router which has several disclosed benefits , however there may also be applications of the system in other types of tool attachments for which coverage is also sought .