Spiral Ratchet Screwdrivers with Automatic Return
By: Scott Marks (Aug, 2015)
I got separated from my Grandfathers Yankee #30 somewhere along the way. One day, it just wasn't there, and I couldn't remember the last time I'd used it. Hand drivers and cordless. Hex bits and quick release collars. Efficient, but no soul. So I bought the pair of Spiral Drivers with Hex drive heads the first time I saw them. And they work well, give you feedback and allow a touch and control that cannot be equaled by cordless, because these are light, and fit well in your hand, a pocket or small go bag. And with good rhythm and firm intent, you provide the torque.
But they have one design flaw. For bit retention, they rely on a delicate O ring. This is not a spring loaded ball detent QR collar, it's a snug tolerance screw-on collar (not collet) and a deep hex socket. Forget, or lose the O ring and the hex bit really doesn't have much retention force, and the O ring can be squished out as you tighten the collar to the point of failure. I want these to work better, and as soon as the O ring fails, I'll use them less and regret it. I want to be able to smoothly change bits without fumbling or mangling the O ring. And I don't have big hands, and prefer lightweight well designed hands tools like these for machine assembly, and am used to delicate work.
A $7.50 Lee Valley Yankee shaft QR collar on a Garage sale Yankee would run circles around these if semi frequent bit changes are required.
I own this product.