The Ratchet Tap Wrench M5–M12 (Draper Tools Group D, DR45698) is a hand tool designed to hold and drive metric taps with shank diameters from 5 mm to 12 mm. Its primary use is to turn taper, plug and bottoming taps when cutting internal threads or cleaning existing threads in metal, plastic or soft composites, with the convenience of a ratchet action for restricted-access or blind-hole work.

Manufactured from drop-forged chrome vanadium steel and heat-treated for durable strength, the wrench is finished with a corrosion-resistant chrome plating to reduce surface rust and ease maintenance in workshop environments. The tool features an adjustable screw chuck that securely accepts square and round tap shanks within the 5–12 mm range, and a reversible ratchet mechanism with a locking lever that lets operators switch between clockwise, anticlockwise and fixed positions. The sliding T-bar handle can be used for additional leverage or removed and stowed when clearance is limited.

This tap wrench is intended for use with standard metric taps conforming to ISO metric thread standards (ISO 261 and ISO 965) and DIN-form taps commonly used across engineering workshops. It will reliably hold taper and plug taps manufactured to BS and DIN dimensional conventions and is suited to intermittent threading and thread restoration tasks where controlled torque and precise alignment are required.

Typical applications include engineering and maintenance workshops, automotive repair, machine building and fabrication, plumbing and pipework thread repairs, and general metalworking and prototyping. The reversible ratchet is particularly useful for blind-hole tapping where frequent reversal is needed without extracting the tap fully, reducing breakage risk and speeding up the operation.

Key benefits of this Ratchet Tap Wrench are its strong, heat-treated chrome vanadium construction for long service life, chrome-plated finish for enhanced corrosion resistance, and wide compatibility with metric taps between M5 and M12. Duchy Fasteners stocks this Draper item (DR45698) in single units and multipacks; please contact us for available sizes, pack quantities and immediate availability.