Adjustable Screw Depth Bit Holder W/ Magnetic Adjustable Screw Depth Bit Holder W/ Magnetic. This Adjustable Screw Depth Bit Holder W/ Magnetic Tip Hardened Nickel Plated Shaft Stainless Construction Bit Holder Super Strong Magnetic Tip & Adj Depth Always Hold Screw In Straight 1/4 Hex Driver W/ PH# 2 Bit Overall Length 60mm"