One of the best items you can buy as an electrician is a good impact driver bit. A good impact driver bit set is important as we go through impact bits on a daily basis. Impact driver drill bits are available in many sizes. Impact drill bits can be bought as a single item or as a full impact bit set. Rack-A-Tiers has many impact driver screw bits to choose from on their website and many sizes from long impact driver bits to short impact rated drill bits. The magnetic tip impact driver tips make the best impact driver bits because of this feature. Rack-A-Tiers has the best impact driver bit sets available.