I have an old pre Snap On Williams extension with a detent ball that is stuck inside and resisted PB Blaster, heat, banging and picking at the ball. I started looking for a replacement It is S110P, 1/2" drive and measures 5 1/2" long. According to an old catalog I found online, it is listed as 5 1/2". I discovered SO/ Williams is still using the same part number but it is now 5". Is this downsizing, like candy bars? LOL!!
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