TEKTON 2899 Retracting Screw Holder/Driver Retractable Sleeve Guides Screw for a Straight Drive Every Time Magnetized Tip Holds Screw in Position for Accurate Start Allows One Hand Driving - Frees Second Hand for Positioning Work Pieces Prevents Screw Wandering in Tough Wood Grain and Near other Holes Screw Capacity: 2-1/2-Inch Length