HARFINGTON 4 Point Square Socket 1" Drive 21mm Metric Square Impact Socket CR-MO Blackening Standard Wheel Sleeve Pneumatic Sleeve Tool for Auto Repair Mechanical Maintenance Home Use

• Size - 1" Drive; 21mm Square Impact Socket; Total Length: 80mm / 3.15"; Package Includes: 1 x 4 Point Square Socket.
• Material - 4-point drive socket is made of sturdy CR-MO alloy steel forging, which has high tensile strength and wear resistance, effectively absorbs impact, is not easy to deform or damage, and is suitable for working environments with high torque. The blackening surface is high-temperature phosphating, helping to prevent rust and corrosion, thereby extending the tool's lifespan.
• Feature - The port of the impact socket adopts a 4-point square structure, which can better fit the square head of the screw or nut, providing a stronger grip when used, preventing the fastener from becoming round, and is not easy to slip. The anti-drop hole design of the base can help the socket be fixed on the tang of the pneumatic wrench or driver to prevent the pin from falling off, making it safer to use.
• Application - The specifications of the square socket are engraved on the surface and are clearly visible. You can quickly switch between different socket sizes while working to improve work efficiency. Square wheel impact sockets are widely used for removing and tightening square head bolts and nuts of various structural fasteners. Suitable for automotive repair, DIY handcrafting, construction, and machinery maintenance.
• Notice - Please make sure that the selected socket size matches the head of the screw or nut to avoid slipping or damage due to size mismatch; please use a professional wrench or torque wrench to match the socket to avoid affecting torque transfer or damaging the socket; when using a socket tool to tighten or remove screws, apply force evenly and appropriately to avoid excessive force that may cause damage to the socket or thread.

4-point drive socket is made of sturdy CR-MO alloy steel forging, which has high tensile strength and wear resistance, effectively absorbs impact, is not easy to deform or damage, and is suitable for working environments with high torque. The blackening surface is high-temperature phosphating, helping to prevent rust and corrosion, thereby extending the tool's lifespan. The port of the impact socket adopts a 4-point square structure, which can better fit the square head of the screw or nut, providing a stronger grip when used, preventing the fastener from becoming round, and is not easy to slip. The anti-drop hole design of the base can help the socket be fixed on the tang of the pneumatic wrench or driver to prevent the pin from falling off, making it safer to use. The specifications of the square socket are engraved on the surface and are clearly visible. You can quickly switch between different socket sizes while working to improve work efficiency. Square wheel impact sockets are widely used for removing and tightening square head bolts and nuts of various structural fasteners. Suitable for automotive repair, DIY handcrafting, construction, and machinery maintenance. Please make sure that the selected socket size matches the head of the screw or nut to avoid slipping or damage due to size mismatch; please use a professional wrench or torque wrench to match the socket to avoid affecting torque transfer or damaging the socket; when using a socket tool to tighten or remove screws, apply force evenly and appropriately to avoid excessive force that may cause damage to the socket or thread.