Common sleeve size diagrams require users to pay attention to three key dimensions: S (6/12 corner hole), L (length), and Drive Hole (four corner hole). These three dimensions determine the environment in which this sleeve tool can be used.
The four corner hole mainly corresponds to the four corner heads of different torque tools. If you buy a 1/2 “ratchet wrench (gourd handle, also known as a clamp), then the socket you buy should also be 1/2”. “L” refers to the length of the sleeve, which mainly depends on your needs when using this tool. Sometimes, some nuts may be locked in relatively deep places, so a long sleeve is needed. “S” refers to the size of the corresponding nut of the sleeve. For example, if you want to loosen the 5mm nut, you need to buy a 5mm sleeve.
Quadrangle hole size:
The square hole, also known as the D river hole (Square Hole), has different specifications due to different usage environments and torque requirements. There are currently five main specifications: 1/4 “(6.3mm), 3/8” (9.5mm), 1/2 “(12.7mm), 3/4” (19.0mm), and 1 “(25.4mm).
Usually, when you go to a hardware tool store, you can find that ratchet wrenches or other dismantling tools have the same size of four corners or holes. The larger the four corner hole, the stronger the torque it can withstand, while the smaller the sleeve, the more suitable it can be used in narrow spaces that do not require high torque. Generally speaking, 1/2 “DR. is a common specification and is most commonly seen in general car repair shops.
SAE (INCH.)&MM (Metric):
At present, popular sleeve sizes on the market are divided into inches (in feet) and millimeters (in millimeters). The common dimensions of 6 or 12 corners in sleeves are expressed in these two units, with a common range of 5.5-24mm. Traditionally, inch is mainly used in American speaking countries, while metric is commonly used in Eurasian countries. (Converted to: 1 inch=25.4mm)
The Eurasian system is mainly used domestically, and the sleeves purchased in general hardware stores are mostly EU specifications. But if it is an American car, especially an old car, the inch series of hand tools will be more needed.
The length of sleeves can be roughly divided into long sleeves, medium sleeves, and short sleeves. Users can choose the most appropriate length based on their work environment. In addition, the middle sleeve is mainly designed for 3/8 “DR sleeves.
