Malco MSHMLC1 2 in. C-RHEX Cleanable, Reversible Magnetic Hex Drivers 5/16 in. and 3/8 in. (1, 2 In.)

The best multi head driver in the league. A must buy for HVAC workers

良いです。後輩に貸したら戻されたのか失ったのか分からなくなり。購入に。結構なお値段で。持っていたのは凄く頭のキレる方から頂いたのでしたが上記の理由で失くしました。

I loved it the only problem is the magnet folding a part

So I work in construction putting up commercial buildings and these are the best bits I have ever used! Our main 2 size are 5/16 and 3/8. The absolute best feature of these is the ability to pop the head off and wipe the magnet clean of the little metal shavings from self tapping screws. I absolutely love malco bits!

Works great only issue is I with it came with an extension but for commercial HVAC it is nice to have and not have to carry a bunch bits. The magnet is powerful enough to hold a hex screw in place and it not fall by shifting.