BONNEY EF-4018 Double Flare Nut Line Wrench 9/16

( Brand: Bonney ), ( Manufacturer Part Number: EF-4018 ), ( Type: Line/flare Nut Wrench ), ( System Of Measurement: Sae ), ( Size: 9/16in. ), ( Set Or Single Item: Single Item ), ( Drive Type: 6 Point )

Review BONNEY 9/16 Double Flare Nut Line Wrench Usa

Introducing the Bonney EF-4018 9/16 Double Flare Nut Line Wrench, a versatile and essential addition to any mechanic's or DIY enthusiast's toolbox. This wrench is specifically designed to tackle double flare nuts, a common type of fastener found in various applications, particularly in automotive and plumbing industries.

The Bonney EF-4018 wrench boasts a robust and durable construction with a chrome-plated finish that not only looks great but also provides excellent resistance to rust and corrosion. Its length measures a convenient 12 inches, allowing for ample leverage and reach to tackle even the most challenging nuts.

This wrench features a unique double-ended design, with two heads on each end. The first head is a standard 9/16-inch square drive, while the second head is a double flare nut head, capable of gripping double flare nuts with an outside diameter ranging from 1.125 to 1.250 inches. The double flare nut head is designed with precise dimensions and tolerances to ensure a secure and snug fit on the nut, reducing the risk of rounding or damaging the nut during the tightening or loosening process.

The handle of the Bonney EF-4018 wrench is ergonomically designed to provide a comfortable and firm grip, making it easier to apply force and maintain control during use. The wrench's design allows for easy switching between the two heads by simply rotating the handle 180 degrees.

The Bonney EF-4018 9/16 Double Flare Nut Line Wrench is not only functional but also aesthetically pleasing with its sleek and polished appearance. It is an indispensable tool for automotive mechanics, plumbers, and DIY enthusiasts who require the ability to work with double flare nuts with ease and efficiency. With its robust construction, precise design, and versatile functionality, this wrench is an invaluable investment for any tool collection.

The Bonney EF-4018 9/16 Double Flare Nut Line Wrench is a specialized tool designed for working with double flare nuts, which are commonly used in automotive applications. Here are some pros and cons of buying this wrench:

1. Highly specific and versatile: This wrench is designed to fit double flare nuts, which can be difficult to work with using standard wrenches. It offers a precise fit, making it a valuable addition to any mechanic's toolbox.

2. Durable construction: The wrench is made of chrome-vanadium steel, which is known for its strength and durability. It is also plated with a protective finish to prevent rust and corrosion.

3. Comfortable grip: The wrench has a knurled handle that provides a good grip, even when working in greasy conditions.

4. Affordable: Compared to other specialized wrenches, the Bonney EF-4018 is relatively affordable.

1. Limited use: Since it is specifically designed for double flare nuts, it has limited use in a general toolbox.

2. Size: The wrench is relatively large, which may make it less convenient to store in smaller toolboxes.

The Bonney EF-4018 9/16 Double Flare Nut Line Wrench is a valuable addition to any mechanic's toolbox, especially for those who work on vehicles that use double flare nuts. Its durable construction, comfortable grip, and affordability make it an attractive option. However, its limited use and size may be drawbacks for some. Ultimately, the decision to buy this wrench depends on the specific needs of the mechanic or DIY enthusiast.

If you frequently work on vehicles that use double flare nuts, then the Bonney EF-4018 9/16 Double Flare Nut Line Wrench is a worthwhile investment. Its precise fit, durability, and affordability make it a valuable tool for any mechanic's toolbox. However, if you only occasionally work on vehicles with double flare nuts or have limited storage space, you may want to consider other options. In that case, you may want to consider investing in a more versatile set of wrenches that includes a double flare nut wrench as one of the options.

Details:

Vintage Bonnie tools EF 4018 9/16 Flare nut line wrench This hard to find item is in excellent condition. Please see photos.

part #: ef4018 price

• $10.00

specifications handwrenche:

• brand: Bonney
• mpn: Ef-4018
• type: Line/flare Nut Wrench
• system of measurement: Sae
• size: 9/16in.
• set or single item: Single Item
• drive type: 6 Point

payments handwrenche:

• other
• wallet: Paypal
• credit card: Diners-club

seller handwrenche:

• rating: 100.0%
• city: Prosper, Texas
• # reviews: 48

shipping handwrenche:

• carrier: USPS
• class: Standard
• type: Calculated
• service: USPS Ground Advantage
• cost: $5.15
• transit: 4-10 Days

returns handwrenche:

• policy: No Returns

general handwrenche:

• condition: Used
• Automotive Tools Supplies > Hand Tools > Wrenches

offer handwrenche:

• best offers: True
• availability: In Stock
• sold: 0
• quantity: 1
• started: November 14, 2025
• options: Ship-to-home

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