SKU: 1790207259

Ko-ken Tools Set of 12 3/8 in Square Drive Master Extension - KB-3760/12

Sale price$130.70 Regular price$145.22
Save 10%

Pay in installments of $36.30 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 16 - Aug 21

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Ko-ken Tools Set of 12 3/8 in Square Drive Master Extension - KB-3760/12Ko ken Tools Set of 12 3 8 in Square Drive Master Extension KB 3760 12 Precision Engineered with Knurled Serration Grip Unlock superior reach and torque control with our Master 3 8" Sq. Drive Extension Set, a comprehensive collection of straight extensions designed to tackle jobs of any scale. Ranging in lengths from 32mm all the way up to 1000mm, this set ensures you have the perfect extension for every scenario from confined engine bays to deep set

Ko-ken Tools Set of 12 3/8 in Square Drive Master Extension - KB-3760/12

Precision Engineered with Knurled Serration Grip Unlock superior reach and torque control with our Master 3/8" Sq. Drive Extension Set, a comprehensive collection of straight extensions designed to tackle jobs of any scale. Ranging in lengths from 32mm all the way up to 1000mm, this set ensures you have the perfect extension for every scenario-from confined engine bays to deep-set fasteners in industrial applications. Each piece in the set features our signature knurled handle with a precision-machined serration grip, offering exceptional non-slip handling, even in oily or wet conditions. The straight-profile design ensures maximum strength and torque transmission without flex, while the premium finish enhances durability and corrosion resistance.

Set Includes:

  • 3760-32 - Length 32mm
  • 3760-50 - Length 50mm
  • 3760-75 - Length 75mm
  • 3760-125 - Length 125mm
  • 3760-150 - Length 150mm
  • 3760-250 - Length 250mm
  • 3760-300 - Length 300mm
  • 3760-400 - Length 400mm
  • 3760-500 - Length 500mm
  • 3760-600 - Length 600mm
  • 3760-900 - Length 900mm
  • 3760-1000 - Length 1000mm
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: 1790207259

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 28 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Sigrid Inger
Alexandria, US
★★★★★ 5
Much much better than the standard sock
Size: X-Large, Color: (001) Black / Black / Castlerock
These socks are superb. Lots of padding in the right places, snug where it should be snug & loose where you don't want it to bind. They are marked with an 'L' for left foot, & 'R' for the right foot (it makes a difference in the fit being perfect. They stay up on your heel & don't slide down
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
C
Verified Purchase
Chris
Alexandria, US
★★★★★ 4
4 lefts vs 2 rights
Size: Medium, Color: (001) Black / Black / Castlerock, Size: Medium, Color: (001) Black / Black / Castlerock
I ordered a set of three. I ended up with four left socks and two right socks lol. Granted it doesn’t matter unless you’re OCD. JEEZ. Love the socks but not the attention to detail the sock company did on matching left/right marked socks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
J
Verified Purchase
Jill
New York, US
★★★★★ 5
My favorite socks
Size: Medium, Color: (001) Black / Black / Castlerock
I love love, love the left and right socks one has an L one has an R and they fit so well and they’re so comfy for running jogging or walking. They are my favorite socks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 8, 2026
V
Verified Purchase
vbgirlfla
Lowell, US
★★★★★ 5
Hold up to tough wear - definitely recommend
Size: X-Large, Color: (001) Black / Black / Castlerock
These are my teens favorite socks. We've ordered multiple sets. Given that he tends to wear then as slippers I am really impressed with how they hold up. The extra large size is great for bigger feet. They wash well and I didn't notice any shrinkage, fading or pilling. This set is going to college with him.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
J
Verified Purchase
Jana
New York, US
★★★★★ 5
Good quality
Size: Large, Color: (400) Royal / White / Mod Gray
To big! I am female size 9 and Amazon was recommending for me size L. Yes, my socks is wearing my boyfriend. I need to buy smaller size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 13, 2025

recommand products