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3/8" Koken Z-EAL Z-Series 72-Tooth Ratchet Handle Expired
$40.55
$80.00
+ Free Shipping
Amazon Japan has 3/8" Koken Z-EAL Z-Series 72-Tooth Ratchet Handle (3725Z) on sale for $42.12 > now $40.57. Shipping is free.
Thanks to Community Member GimmeYoTots for finding this deal.
Note: Item ships from Japan and is sold by Amazon Japan.
Details:
Thanks to Community Member GimmeYoTots for finding this deal.
Note: Item ships from Japan and is sold by Amazon Japan.
Details:
- Customer reviews indicate that people are receiving the new 72-tooth version of these ratchets
- 7" total length
- Made in Japan
Original Post
Written by
Edited February 28, 2023
at 07:25 AM
According to the Amazon reviews, this is the new 3725Z-72T version with the newly redesigned low back drag 72 tooth mech. The previous mech was their low back drag 36 tooth that Ko-ken has been making for a long time. The Ko-ken 1/4" 72 tooth hasn't even been released, yet, and is reportedly almost 2 yrs behind schedule.
Finally, this deal is coming from Amazon Japan. Amazon Japan has some amazing prices on Japanese tools - but do note, Ko-ken tools, even on Amazon's Japan website are still quite expensive. None the less, Amazon has waived the normal almost $20 shipping cost and offered free shipping on this item. I ordered one for myself and can't guarantee this is the 72t version - but all of the recent Amazon reviews seem to suggest everyone is receiving the new 72t version.
EDIT - UPDATE --- Amazon Japan (possibly due at least partially to exchange rates) has dropped the price to $40.57
KO-KEN RATCHETS [kokenusa.com]
Ko-ken ratchets are known for their very low backlash, small head sizes, and high torque ranges. We designed the new 72 tooth ratchet without compromising on our traditional strengths. The patented design of the 72T combines the low backlash, small size, and has a 10% higher torque limit in comparison to the 36 tooth ratchet. The legacy 36 tooth ratchets move 10°/click. The new 72 tooth ratchets move 5°/click.
The design changes include moving from the single pawl of the 36 tooth design to the patented dual pawl of the 72 tooth design. The dual pawl 72 tooth design utilizes a single spring. We took four years of testing to perfect the low spring pressure needed to maintain Ko-ken's hallmark low-torque backlash. The finer 72 teeth design creates more surface area contact with the gear; thus, it has a 10% higher torque upper limit.
The 72T is being released in the Z-Series 3/8" ratchets only in 2021. We will be releasing the 72T in ¼" and ½" sizes, without compromising the body sizes and low backlash as our testing allows. Look for more new product releases in 2022.
https://www.amazon.com/gp/product...CL0Y&
Finally, this deal is coming from Amazon Japan. Amazon Japan has some amazing prices on Japanese tools - but do note, Ko-ken tools, even on Amazon's Japan website are still quite expensive. None the less, Amazon has waived the normal almost $20 shipping cost and offered free shipping on this item. I ordered one for myself and can't guarantee this is the 72t version - but all of the recent Amazon reviews seem to suggest everyone is receiving the new 72t version.
EDIT - UPDATE --- Amazon Japan (possibly due at least partially to exchange rates) has dropped the price to $40.57
KO-KEN RATCHETS [kokenusa.com]
Ko-ken ratchets are known for their very low backlash, small head sizes, and high torque ranges. We designed the new 72 tooth ratchet without compromising on our traditional strengths. The patented design of the 72T combines the low backlash, small size, and has a 10% higher torque limit in comparison to the 36 tooth ratchet. The legacy 36 tooth ratchets move 10°/click. The new 72 tooth ratchets move 5°/click.
The design changes include moving from the single pawl of the 36 tooth design to the patented dual pawl of the 72 tooth design. The dual pawl 72 tooth design utilizes a single spring. We took four years of testing to perfect the low spring pressure needed to maintain Ko-ken's hallmark low-torque backlash. The finer 72 teeth design creates more surface area contact with the gear; thus, it has a 10% higher torque upper limit.
The 72T is being released in the Z-Series 3/8" ratchets only in 2021. We will be releasing the 72T in ¼" and ½" sizes, without compromising the body sizes and low backlash as our testing allows. Look for more new product releases in 2022.
https://www.amazon.com/gp/product...CL0Y&
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| Product Name: | 山下工業研究所 Koken Z-EAL 3/8 (9.5 mm) SQ. Ratchet Handle, Total Length: 7.0 inches (178 mm) 3725Z |
| Manufacturer: | 山下工業研究所 |
| Model Number: | 3725Z |
| Product SKU: | B005I7HVYS |
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Yes, breaker bar first, then the ratchet for the big/stubborn bolts (and for the bolts holding, say, the brake caliper cages).
The context I was a replying to was a HF 90 tooth ratchet- which I have equivalents of kicking around- that I also would not trust breaking some 14mm bolts. Though most of my main ratchets can deal with some of those (CA cars).
The only ratcheting device that sees high torque is my SnapOn L672B, and just for convenience (I don't have a lift).
On the 9th day, Milwaukee created my trustee 2864-20. With the right beefy socket, I now laugh at the times I was bouncing on the end of the pipe / breaker bar.
For tightening, I use (only) beam (deflection) or angular gauges .. maybe a clicker for lug nuts.
Funny, I used to say the same thing about craftsman and sears.
Yep, until the stores go out of business. Good luck with that and good luck driving to Sears to swap out broken tools lmao