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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
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Description
Stahlwille 3/8 in Drive Bi-Hexagon Socket, 21mm - ST 02010021Stahlwille 3 8 in Drive Bi Hexagon Socket, 21mm ST 02010021 The Bi Hexagon Socket is a versatile and durable tool designed for professional and DIY applications. Its 12 point design ensures a precise fit, providing maximum grip and torque while minimizing the risk of rounding fasteners. Made from high quality materials, it offers exceptional strength and resistance to wear, making it ideal for demanding tasks. Features: DIN 3124 ISO 2725 1, ASME B
Stahlwille 3/8 in Drive Bi-Hexagon Socket, 21mm - ST 02010021
The Bi-Hexagon Socket is a versatile and durable tool designed for professional and DIY applications. Its 12-point design ensures a precise fit, providing maximum grip and torque while minimizing the risk of rounding fasteners. Made from high-quality materials, it offers exceptional strength and resistance to wear, making it ideal for demanding tasks.
Features:
- DIN 3124/ISO 2725-1, ASME B 107.5M, DIN EN 3709
- HPQ high performance steel, chrome plated
- High Performance Quality (HPQ) tool is made of wear-resistant high-performance steel, yet is thin-walled and lightweight. It withstands high torques and is ideal for work in confined spaces such as turbines
Specifications:
- Drive Type: Bi-Hexagon
- Internal Square Drive Size: 3/8 in
- Overall Length: 34mm
- Overall Weight: 0.12 lbs
- Width Across Flats: 21mm
Product Dimension (Refer Image):
- d1 Size: 27.7mm
- d2 Size: 21mm
- d3 Size: 20mm
- t1 Size: 15.5mm
- t2 Size: 20.5mm
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
4.1 ★★★★★
Based on 149 reviews
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Product Reviews
★★★★★ 5
More power, slightly lower (8%) MPG.
Size: (Pack of 1)
Installed on a 2.0 liter Subaru Impreza.
I drive up/down the I5 in california 3-4 times a year. For those that don't know there is about a 200 mile flat stretch where everyone runs at 75-85mph.
With various filters (FRAM, BOSCH, Subaru OEM), I would consistently get 29.8 mpg. Once I installed the K&N, I could feel the car pulling with a bit more power, but I noticed that I was getting about 27.5 mpg.
Totally worth it as the impreza is a little under powered and I don't drive many miles (6k/year) but if you are putting a lot of miles on your car, you may want to have more mpg.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
fits my 2013 chevy suburban 5.3 and appears to be high quality
Size: (Pack of 1)
fits my 2013 suburban perfectly. looks to be a well constructed unit.
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Reviewed in the United States on March 29, 2026
★★★★★ 5
Very good quality comparable to OEM at a much more reasonable price point.
Size: (Pack of 1)
Last December we bought our first new car in 21 years and the first thing I did is stock up on cabin and engine air filters. I've got nothing against dealership OEM parts and pieces but what I do have an issue with is the prices. Luckily, we all have a bit of control over access to OEM quality parts and pieces at significantly more reasonable prices via Amazon. This filter and it's matching cabin filter are excellent in value and take less than 5 minutes to replace. Compare that to paying the hourly rate at your dealer plus the dealership retail price and you'll do what I did and stock up on these two filters. Definitely recommended.
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Reviewed in the United States on September 25, 2025
★★★★★ 4
It will fit a 2022 Subaru Outback
Size: (Pack of 1)
Higher quality than OEM item fit and arrived on time. This was for a 2023 Subaru Outback
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Reviewed in the United States on September 15, 2025
★★★★★ 5
High quality
Size: (Pack of 1)
Looks a lot nicer than the one that came with my Subaru Outback (OEM). Performs the same or better.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026
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