The sleeve is a cylindrical tool used to disassemble nuts or bolts, and the cross section of its inner surface is hexagonal. The specifications of the sleeve are divided into English system and metric system. The inch size sleeve is increased by 1:16 inches and 1:32 inches in sequence; the metric size sleeve is increased by 1 cm. For car owners, sleeves are needed when disassembling tires or spark plugs.
When using a sleeve, you must not choose a sleeve that fits the nut or bolt completely. If you use a sleeve larger than the nut or bolt, the sleeve will easily round the nut or bolt head during rotation. When disassembling relatively tight wheel bolts, if a suitable extension rod is placed on the sleeve handle, the rotating torque can be increased and the wheel bolts can be easily loosened. It is important to note that if you use the sleeve handle to extend the rod when tightening the wheel bolts, remember not to use excessive force to prevent the rotation torque from exceeding the bearing range of the nut or bolt, otherwise the nut or bolt will be easily damaged.