Insize Open End Head Open Size 7 to 19 mm for Torque Wrench

The "Insize Open End Head for Torque Wrenches IST-2W30A & IST-2W135A" refers to a specific type of open-end head attachment designed for use with torque wrenches manufactured by Insize. Here's more detailed information: Brand and Model: "Insize" is the brand, and "IST-2W30A" and "IST-2W135A" are the model numbers assigned to the torque wrenches that these open-end heads are compatible with. Open End Head Attachment: An open-end head attachment is a tool accessory that can be fitted onto the drive end of a torque wrench, allowing it to be used for applying torque to fasteners with open-end configurations, such as bolts or nuts. Compatibility: The Insize IST-2W30A and IST-2W135A open-end heads are specifically designed to be compatible with the IST-2W30A and IST-2W135A torque wrench models, respectively. These torque wrenches likely have a square drive that allows for interchangeable heads or attachments.