SKU: 38695719022

Ko-ken Tools Z-Series 3/8" Sq.Dr. Reversible Ratchet, L=100mm - 72 Tooth

Sale price$62.96 Regular price$69.95
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Description

Ko-ken Tools Z-Series 3/8" Sq.Dr. Reversible Ratchet, L=100mm - 72 ToothKo ken Ratchets 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 degree click. The new 72 tooth ratchets move 5 degree click. The design

Ko-ken Ratchets

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 degree/click. The new 72 tooth ratchets move 5 degree / 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 sizes, without compromising the body sizes and low backlash as our testing allows. Look for more new product releases in 2022.

Input Drive Size: 3/8"
Drive Shape: Square
Length: 120 mm
Head Type: Fixed
Gear Teeth: 72Teeth
Head Thickness: 13.7mm


Product Dimension (Refer Line Drawing Image):

T Size: 24.5mm
D Size: 28mm
H Size: 13.7mm
L Size: 100mm

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 38695719022

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Maddie I.
Belleville, US
★★★★★ 5
Amazing, never have to but the disposables again
Color: Matte Gold
Great quality, heavy, and works great. Lots of replacement blades too!
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Reviewed in the United States on May 26, 2026
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DaddyKiller
Massapequa, US
★★★★★ 5
Nice feel
Color: Matte Silver
Feels good in the hand. It has some weight to it. I like the fact you can change out the blades. Way better than the cheap plastic disposable razors.
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Reviewed in the United States on April 13, 2026
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Carmon M Kalthoum
Battle Creek, US
★★★★★ 5
Great Exfoliator
Color: Matte Gold
Beautiful gold color, nice ergonomic feel and weight. I had been using disposable plastic razors, and thought I would take a chance on this more professional styled one for dermal exfoliation as well as my eyebrows. This razor is sharp, but it is easily managed when start gently, you don’t slide it in a cutting fashion, just use it on taught skin, and lift it up for repositioning. When I did my brows, there was no evidence of hair growth left behind. AWESOME! This razor comes with spare blades as well as replacement parts if needed. It has a rubbery silicone cap to slide on and off easily, but not fall off creating danger. The razor has a small accessible prong to easily slide it out for replacement. It comes nicely packed with detailed instructions. I highly recommend this for anyone wanting to take a decade off of their skin. I would recommend a professional if you have any shakiness though.
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Reviewed in the United States on January 9, 2026
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Jennifer
Massapequa, US
★★★★★ 5
Gets my face smooth!
Color: Silver-blades
Great blades. Works fantastic in my dermaplaner. Very nice! Gets my face so smooth!
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Reviewed in the United States on May 9, 2026
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Amazon Customer
Phoenix, US
★★★★★ 5
Jist what i need
Color: Matte Blue
Good quality,
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Reviewed in the United States on May 11, 2026

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