Could it be? Back in the 80's my dad gave me a 4 in 1 screwdriver. I put it through the ringer. Best screwdriver I ever owned. Felt right in the hand. Wore out the blade and in 1991 snapped the tip off the phillips trying to get a shower valve apart. When I couldn't find a replacement my brother gave me his. I have been looking for another ever since. It is the top screwdriver in the photo. As you can see, it doesn't say Enderes but could it be a private label or ? They look to be very similar. 4 In One Screwdrivers Inc no longer exists.
The Christy's is a nice screw driver and the closest to the original I have seen, but isn't the same. The tube diameter is slightly smaller, the handle appears to be a different type of plastic (I think the original may be nylon) and 4 sided rather than 6, and the bits are different (small #1 and medium #2 combos versus medium #2 and large #3 sizes). Finally, as you can see below, the reinforcing collar in the handle of the original is steel and in the Christy's is a cast material.
Looking at the Enderes website, and reading your comments, at the very least I would say I have a source for quality replacement bits

, but the measurements of the screwdriver itself seem to be different. The bit holding tube on mine is 4.5 inches long (with a 5/16" bit) and it looks like the Enderes is 3.5". Can anyone confirm whether this is an Enderes driver or not? Either way, I will be putting in an order. I really like the 6 sided handle and would like a couple more. In fact, there are several tools I would like to pick up.
Thanks for joining in the conversation Steve, and for investing your time and energy in the purchase of the company. We need more owners like yourself.