Designed for use with DuraSpin’s also-awesome automatic drywall screw gun, I found that the replacement bits were an inexpensive source of joy for use with power screwdrivers and drills for many electronics shop, computer repair, telecom, and datacenter uses.
Typically sold as a two-pack for around $7, I’ve found them at Ace Hardware and Home Depot, among others. They’re never with the other bits, but instead are usually stocked next to the DuraSpin tools.
Anyone who has done serious work with electronics has been frustrated by screws that can’t be reached by a regular length power driver. Bit extensions are wobbly, and the variable diameter extender’s shank can make it difficult to move through a bunch of cords and other obstructions, as well as block your view.
The nine-inch EA0128 bit, lightly magnetized with a tool magnetizer, allows you to reach that nasty screw down in a corner that’s holding a PCB in place, surrounded by delicate components. In a data center rack, it can reach through a bundle of cables so that you can hit a mounting post screwhole straight on, rather than trying to manually start a screw and then drive it at an angle because the power screwdriver is too bulky to go straight on. The EA0128 is a great enabler for such tricky environments.
The downside to this tool is that it feels awkward at first, because the tip is so much further from the user. However, once used to this, it becomes very natural, and eventually the short bits start to feel awkward.
The bits are nearly indestructible, and are convenient to abuse as crowbars or nail sets in a pinch.
Having used these for probably about twenty years, largely in combination with our totally awesome Milwaukee 6546-6 cordless screwdrivers, I cannot imagine doing any significant amount of electronics work without them.