7mm x 2" スロット付きインサートビット - 10本入り

I was a bit skeptical about a 10-pack at this price, but the S2 steel is clearly tougher than the cheaper bits I've used before after a full day of driving screws.

These S2 steel bits are holding up way better than my old chrome vanadium ones on tough screws, and the 7mm slotted size is perfect for the electrical work I’ve been doing. The 10-pack means I don't have to stop and hunt for a replacement mid-project.

I've been using these bits for a few weeks now, and the S2 steel holds up noticeably better than my old ones did on stubborn screws. The 2-inch length gives me enough reach for deeper pilot holes without wobbling.