The new Orchids and eBay 2008 database, effective 23 November, Zephyr Bits, ¼ inch hex shank, 1 1/4” long
… Aerospace Torq-set Power Bits …
• Screwdriver tip
• ¼ inch hex shank, 1 1/4” overall length
• ¼ inch hex shank, 1 1/4” overall length
TS170-1/4B-USA is stamped on the bit. The item number cross references to ZEPHYR tool catalog. These bits are black. Probably tempered steel for high torque.
http://www.zephyrtool.com/pdf/ZephyrScrewdriverCatalog.pdf - refer to page 15
Zephyr is a major supplier of aerospace tools
