| Also known as | JRC 20-164 |
| Listed in parts books | Not catalogued by year yet |
Whitworth Socket Set - 6 pc/ 12 point - 3/8" Drive (1/8-7/16WW) Koken Japan
A 6-piece, 12-point Whitworth socket set on 3/8 inch drive, covering 1/8 to 7/16 WW, made by Koken in Japan.
This is a six-piece Whitworth socket set, 12-point, on a 3/8 inch drive, covering the 1/8 to 7/16 Whitworth range. It's made by Koken in Japan, sold under the JRC part number here but also known by the older 221-25/A designation if that's what shows up in your records.
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Whitworth sockets are the right call for old British iron, since Whitworth and BSF fasteners don't match up cleanly with metric or SAE sockets. A set like this covers the common small-to-mid range of hex heads you'll run into on nuts and bolts across a vintage British bike, sparing you from rounding off heads with the wrong tool.
We don't have more detail on this one beyond what's in the listing itself. If you need a specific size confirmed before you order, give the shop a call and we'll check it against what's in stock.
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