1/4 to 4mm Bit Adapter,2 Pieces 1/4 to 4mm Hex Adapter Magnetic and 2 Pieces Drill Extension Micro Bit Holder (4 Pack)

I like these adapters for the price and quality. Allowed me to put my precision bits into a normal screwdriver. Perfect fit! I use this for working on my kids toys but also on my hobby cars. These do have a good quality magnet holding screws and perform great.

I have a number of 1/4" driver kits that I can take to wherever they might be needed; Included is a DeWalt variable speed battery powered screwdriver. Recently I acquired a couple of newer multi-tools that are made by some of the up-and-coming manufacturers in China. These tools are bundled with around 10 different driver bits, but the 4mm size, not 1/4". So, I started to think maybe I should consider standardizing on 4mm, the thinking being if you're working on smaller equipment, the smaller 4mm system should work. However, having given it further thought, I decided to stick with the 1/4" drive system (at least for now) since I have so many tools and accessories using the 1/4" drive system. But I now have some 4mm driver bits that may come in handy, and I came across these adapters. i ordered them and tried them out and they work great. So, now if I want to use the new 4mm bits, I just chuck up these adapters and I'm good to go.Sorry for such a long post, but there are more and more conversations re 1/4" vs. 4mm, I thought I'd share my experience with the subject.

They work well and the small bits fit very well in them fasteners are getting smaller now and the small bits are needed more often, not sure if I will use them in a power tool but probably will use them in a manual driver with a ratchet feature

works perfectly

These were nicely priced for what I needed them for.Magnet is strong and holds bit in place very well.The longer 4mm to 1/4 bit adapters base is to long for my screwdriver Chuck to engage all the way and hold bit in place.The construction isn't consistent. Lengths of the longer ones weren't the same. Also seemed like the 4mm socket in one was drilled out and replaced by a sleeve. This caused some the bit to wiggle more them the other. Shouldn't be an issue since you won't be torqueing the screw driver so much with a 4mm bit that it will strip the 4mm socket.Noticeably more bit wiggle between the 2 shorter 4mm to 1/4 bit adapterAll and all for $10 it's worth it if you need 2 sets of these..

Handy adapter so micro bits can be used in a standard 1/4" tool. Good quality, good value for the money

I was afraid these would be too loose or too tight, but they fit perfectly with bits from the OEM for my driver, and some I bought from McMaster-Carr.

Works great magnetic