These Insulated Torque Screwdrivers by Wiha are available in 3 torque ranges and feature interchangeable blades. Each handle has unique serial number and certificate of calibration. Other features include:

• +/- 6% Accuracy
• Ergonomic multi-component handle, light and compact.
• Handle sizes proportioned to optimize torque range.
• Audible & perceptible click when torque setting has been attained.