A system for transferring an object from one user to another user that is useful to prevent unintentional dropping of the object is disclosed. A cam is rotatably connected to a structure that is configured to be attached to a first user. A central housing with two ports is configured to allow for the attachment of a tool by lanyard or other means. When the first cam is locked into the one of the housing ports, it cannot be released from the housing unless a second cam is inserted into the second housing port and captured. Once the second cam is captured the first cam is released, thus safely passing the tool from the first user to the second user while minimizing the chance of dropping the tool.