Tekton Screwdrivers Have Handles That Are Designed for Speed & Torque;The Front Of the Handle Is Round for Quick Turning & the Middle Transitions To a Tri-Lobe Shape That Provides a Secure Grip for High-Torque Driving;The Handle’s Red Exterior Is Made Of a Lightly Textured TPE Material That Is Slightly Soft & Grippy for Controlled Spinning, Fine Adjustments, & Reduced Slipping Under Torque;Handle Materials Resist Most Common Shop Chemicals;Each Driver Has the Tip Size Engraved In Four Locations with High-Contrast Laser Markings;Each Screwdriver Handle Has the Same Size Through-Hole So You Can Hang It On a Hook;You Can Also Attach a Safety Lanyard When Working At Heights To Prevent Drops;Tips Are Precisely Machined & Coated with Black Manganese Phosphate, Creating a Slightly Rough Surface That Enhances Screw Engagement;The Conversion Coating Produces a Uniform, Corrosion-Resistant Layer That Preserves Tip Geometry & Doesn’t Chip or Flake Off;The End Of the Shank Is Flattened To Form a Broad Surface That Resists Twisting Inside the Handle;The Handle Is Molded Around the Shank, Creating a Solid Connection That Is Stronger & Straighter Than Simply Pressing the Shank Into a Premade Handle.