These accessories are commonly sold with the 108 AS 1.3, 140AFB and 180AFB Cordless Drills&Screwdrivers. Client often request extra drilling heads so its easy to switch between jobs. The 1/4 hex to 1/4 socket adapter, is used to mount socket on the cordless tools. The belthook can only be used with the AFB models. (140 and 180)