How does the self-setting jaw work?

The parallel jaws adjust continuously as you push the wrench onto a hex bolt or nut. A lever mechanism then clamps the fastener between the jaws, so the tool grips rather than slipping.

Does it replace a full set of spanners?

It covers all metric and imperial hex sizes within its adjustment range, so it can replace several fixed spanners in that span. Sizes outside its range still need a separate tool.

Can it be used as a ratchet?

Yes. The mechanical ratchet lets you turn the fastener back and forth without lifting the wrench off, and the 30-degree back-pivoting angle helps in tight spaces.

Is it safe on bolt heads?

The lever mechanism clamps the hex between parallel jaws, which reduces slipping and rounding compared with a loose-fitting open-end wrench. Worn or damaged fasteners still grip less well.

What is it best suited to?

Bike, motorcycle and light automotive work, furniture assembly and general maintenance where fastener sizes vary. For high-torque or critical fasteners, use a torque wrench.

Where can I buy the Wera 6004 Joker Self Setting Wrench Medium 05020103001?

14 stores we checked sell it, including Amazon, Tree Fort Bikes, Acme Tools, KC Tool, Performance Bicycle.

Wera 6004 Joker Self Setting Wrench Medium 05020103001

Q: Where is the Wera 6004 Joker Self Setting Wrench Medium 05020103001 cheapest?

At Amazon, for $48.17, 15% under what the other stores charge, as of our latest check.

Best price now

$48.17at AmazonChecked 6 h ago

15% under what the other stores charge

Compared across 14 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

Visit Amazon