Vintage Snap-on 5pc 12-Point SAE Flank Drive 60° Deep Offset Box Wrench Set (9/16-1/4") Professional Grade 1965-1975

Professional-grade Snap-on deep offset box wrench set featuring the revolutionary Flank Drive system, patented in 1965. This 5-piece set includes sizes from 1/4" to 9/16" in SAE measurements. The Flank Drive system provides superior grip and prevents fastener corner rounding, developed originally for aviation applications. Each wrench is manufactured from Snap-on's proprietary alloy steel, delivering exceptional durability and professional quality.

Included in this set (with current list price of each):
1/2-9/16"  XO1618  $65.50
7/16-1/2"  XO1416  $59.50
3/8-7/16"  XO1214  $59.50
5/16-3/8"  XO1012  $63.00
1/4-5/16"  XO810    $58.25

Key Specifications
Made in USA
Manufacturer: Snap-on Tools
Material: Proprietary Alloy Steel
Finish: Chrome
Drive Type: Flank Drive
Angle: 60° Offset
Set Contents: 5 Wrenches (1/4", 5/16", 3/8", 1/2", 9/16")
Period: 1965-1975

Sold as is. No warranty from the seller. No Returns.

CONDITION NOTE: Used, and in excellent condition overall, but does include the engraved initials of "ERV" from the original owner on each of the wrenches (see pictures). Wrenches have some light surface scratches and dirt from storage & use (see pictures)! Does not include the original box, or packing materials. See detailed high resolution (zoom-able) pictures to know what you are purchasing.

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Source of product research for this listing was from an AI engine and I cannot be sure that it is 100% accurate. I encourage you to confirm this information with your own research.
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Manufacturer Background
Snap-on Tools was founded in 1920 in Milwaukee, Wisconsin, and quickly became the premier professional automotive tool manufacturer in America. The company revolutionized the tool industry with their interchangeable socket system and direct-to-mechanic sales model. The Flank Drive system, introduced in 1965, was initially developed for the U.S. Navy and became a standard across their product line.

Age/Release Date
This set dates from between 1965-1975, as evidenced by the Flank Drive patent (1965) and manufacturing characteristics.

Search Keywords
Snap-on tools, vintage wrench set, Flank Drive, SAE wrenches, professional tools, mechanic tools, deep offset wrench, chrome wrench set, USA tools, box end wrench, automotive tools, industrial tools, classic tools, 12-point wrench, tool collection

NOTE: If you would like to see all the Mechanics Tools that I currently have listed, please check out this eBay Store category now and to watch for more pieces being added over the coming weeks/months: https://www.ebay.com/str/quantumonlinesalesservices/Mechanics-Tools/_i.html?store_cat=34571823011