This set is ideal for those dealing with plant or commercials or agriculture. The T bar has a very heavy duty sliding extension bar giving massive leverage for stubborn wheel nuts. There is also an 8″ extension bar and a 1/2″ square drive converter socket. This all fits conveniently into a steel socket case which is embossed with the AA logo. Sizes are 11/16″, 3/4″, 7/8″, and 1 1/8″ and 17, 19, 21, 23, 24, 27, 28 and 30mm. As you can see the sockets are generally little used and are not the usual battered examples that have seen years of abuse from an industrial impact driver. The chrome on the silvered items is not very good, and does not look great cosmetically, but they are nevertheless extremely serviceable.