The biggest and smallest perfect handle screwdriver I own! The big one is in need of new scales, the old ones are too worn. But the small one is still very good! :
Irwin Wood Handle Screw Drivers Review - YouTube
Irwin debuts 4 updates for its Performance Series Screwdriver line | Woodworking Network
Vintage Set of 2 Pc IRWIN TOOLS 300 3 Screwdriver - Etsy
Progress is fine, but it's gone on for too long.: The "Perfect Handle" Screwdriver