Torque Wrench with 72-Tooth Ratchet, ±3% Clockwise Accuracy

A torque wrench lets you tighten a fastener to a set value rather than guessing by feel, which matters on cylinder heads, wheel nuts and suspension joints where too little clamping force loosens and too much stretches the thread. This one uses a 72-tooth ratchet head and holds ±3% accuracy clockwise, so the click or release point stays close to the number you dialed in.

What the 72-tooth ratchet does for you

Seventy-two teeth mean the head engages every five degrees of swing. In an engine bay where the handle can only move a short distance before hitting a hose or the inner wing, that fine arc is the difference between being able to torque a bolt and having to guess at it. On long bolts, it also means fewer re-seats of the socket between pulls.

Which torque range and drive size do you need?

The wrench comes in four length and range combinations, and the right one is decided by the fasteners you work on, not by the biggest number available.

• 10-80 ft.lb, 41.7cm — the small end of the range. Suits valve covers, small brackets, and fasteners where a 200 ft.lb tool would be too coarse to read.
• 10-150 ft.lb, 42.9cm — the general-purpose choice for most engine, brake and suspension work.
• 20-200 ft.lb, 23.8cm — a shorter body with a higher ceiling, useful where the handle has to fit under a wheel arch without the extra length getting in the way.
• 25-250 ft.lb, 56.5cm — the longest of the four, for hub nuts, crank bolts and other high-torque fasteners.

Note that a tool rated to 250 ft.lb is least accurate at the very bottom of its scale, so pick the smallest range that covers your highest torque figure rather than the largest one on the shelf.

Accuracy: what ±3% clockwise means in practice

The rating covers clockwise tightening, which is the direction that matters for almost every fastener on a vehicle or machine. At 100 ft.lb, a 3% tolerance is three foot-pounds either side of the setting. Two things keep that figure meaningful: set the value on the scale before each job rather than leaving it wound up between uses, and pull smoothly to the release point instead of jerking the handle.

Where a torque wrench earns its place

Wheel nuts after a brake job, cylinder head bolts in sequence, suspension arms after a bush replacement, and anything with a gasket or a crush washer that will not seal evenly if the clamping force varies from bolt to bolt. It is also the tool that stops a small fastener from being stripped by a long handle that gives more leverage than the thread can take.

Will it fit the sockets I already own?

The wrench takes metal sockets in the matching drive size, so standard steel socket sets in the same size fit directly. Check your socket set’s drive size against the 2/1, 1 1/4 or 3/8 inch options before you choose. It weighs 2.750 kg in total.

How should it be stored between jobs?

Wind the scale back to its lowest setting before the wrench goes back in the drawer. A spring held at a high setting for months takes a set, and the tool then releases early the next time you use it. The metal body will take the knocks of a toolbox; the adjustment mechanism is the part worth protecting.

Specifications

• Weight: 2.750 kg
• Suitable For: Metal
• Type: Torque Wrench
• Drive Size: 2/1 1/4 3/8 inch
• Ratchet Teeth: 72
• Accuracy: Clockwise ±3%