This set includes deep sockets in sizes 17mm, 19mm, 21mm, 22mm, 23mm, 24mm, and 27mm. The sockets have a length of 65mm and are made from Chrome Molybdenum for strength and durability. They feature a nylon sleeve to prevent damage to alloy wheels and nuts, and are color-coded for easy size selection. The set comes in a blow mold case. Please note: Alloy wheel impact sockets have an ultra-thin walled design permitting a limited torque range. They are suitable only for wheel nuts and have a maximum torque limit of 475Nm. The sockets are 1/2" drive and have a 6-point single hex design.