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Description
wera 6004 joker xxl self adjusting open end wrench 020102Many users want a universal tool for screw joint work that covers as wide an area of application as possible. It should be a single tool for multiple sizes, both metric and inch, that is capable of automatically adapting to different screw sizes. It should also grip the screw securely, not cause damage and allow high speed in work. Thanks to the continuously adjustable and parallel jaws, different individual sizes of open end wrenches can be replaced.
Many users want a universal tool for screw joint work that covers as wide an area of application as possible. It should be a single tool for multiple sizes, both metric and inch, that is capable of automatically adapting to different screw sizes.
It should also grip the screw securely, not cause damage and allow high speed in work. Thanks to the continuously adjustable and parallel jaws, different individual sizes of open-end wrenches can be replaced. The necessary size is self-adjusting by placing the tool on the screw or hexagonal nut continuously.
The integrated lever mechanism clamps the screw or hex nut securely between the jaws of the jaws, significantly reducing the risk of slipping or damage. The ratchet function that this tool integrates allows for fast and uninterrupted work without having to constantly reposition the wrench.
The use of prismatic angles allows a recovery angle of only 30°. The single arm construction in combination with the ratchet function and prismatic angles makes it easy to work in tight and confined mounting spaces. The adjustable Joker 6004 is the ideal universal tool for work on screwed joints. Self-adjusting. With a strong grip. Serves as a ratchet.
CHARACTERISTICS
- Automatic and continuous gripping of hex screws and nuts
- During gripping action, the lever mechanism prevents slippage and damage
- Fast and continuous screwdriving work without having to interrupt it when repositioning the wrench thanks to the mechanical ratchet function
- A return angle of only 30º thanks to the positioning of the angular prisms inside the mouth
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 4
It's what'd you would expect
Size: 58.5mm Flat Base
I work in espresso professionally and got this as a tester for ergonomic purposes.
It does its job as a tamper and does level with little dusting from it being 58.5mm. The self leveling does work. However depending on my baskets (using vst now) it will.self level where the lowest part of the puck is handle side and highest.part opposite. Not an issue with the tamp but something to be mindful of. Works perfectly well on my gaggia setup...not so much commercial grade. The spring is adequate but i tend to tamp a bit harder on heavy weather days..
Build quality is fine but i would have rather used a regular style tamper.
Also palm tampers pretty much need to be self leveling based on the ergonomic nature.
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Reviewed in the United States on July 21, 2024
★★★★★ 5
Solidly constructed and has a premium, hefty weight
Size: 58.5mm
Works exactly as described. Can be a bit heavy but otherwise it is a premium built product. If you have too much coffee in your basket and they're near the rim of it, coffee can get stuck to the sides of the distributor. A little annoying but easily remedied by brushing the grounds back into the basket or by "flattening" the coffee grounds in the basket first prior to distributing.
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Reviewed in the United States on November 26, 2024
★★★★★ 5
Would purchase again
Size: 58.5mm Flat Base
Fits my Gemilai portafilter perfectly. Works as expected, but can be slightly unlevel in tamping. Has a tendency to push the coffee down more on the handle side of the basket. I try to make sure I apply pressure in the middle of the tamper and it seems to make all the difference.
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Reviewed in the United States on January 6, 2026
★★★★★ 3
used product, but works
Size: 58.5mm, Size: 58.5mm
The product is good, I was sent a was clearly looks to be a used product with scuffs on it and some rust, I can clean that up and for what it does, it'll do, just weird to receive a used product.
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Reviewed in the United States on March 31, 2026
★★★★★ 5
Great scale that needs some improvements to be perfect
Color: White, Color: White
Very accurate scale, looks good in white, timer works nicely and I do like the concept of the ratio conversion. Shown in photos with 0 measurement drift over time, even without the silicone mat.
To make this the best scale in the price range, I would change:
- The auto timer function. Timing currently stops if you pick up the brew to swirl; you must completely restart the process if you do happen to pick it up. I would change that to only stop on user input (pressing a button).
- The ratio conversion. Why offer XX.0 precision if you can only change the ratio in whole amounts? I'd suggest offering 0.1 increments, selectable with +/- buttons instead of cycling through.
- The silicone mat is not well affixed and slides around. Kind of useless as-is and I just keep it off. I would wrap the whole thing around the measurement platform, similar to how the Greater Goods scale does it, to really keep it secure.
It's not perfect, but for the price, it's a 4.5/5 for me. Rounding up to 5 since a 4 is considered "bad" by today's online rating standards.
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Reviewed in the United States on December 22, 2025