Attributes . Features: Larger Shank For Heavy-Duty Applications; Vapor-Blasted Tip Prevents Plate Chipping; Cross-Ground Tip Provides Precise And Secure Fit In Screw Slot; Square Shank Models Offer Wrench-Assisted Turning; Nickel-Chrome Plating For Corrosion Resistance; Tough, Chrome Vanadium Steel Shank; Cushioned Rubber Grips; Lifetime Guarantee; Identification Mark On Ends; Shank Size: 1/4 IN; Warranty: Lifetime Guarantee . Names