The Klein Tools 603-1 Stubby Phillips Screwdriver has a 1-1/2-inch round shank. The full hollow shaft is designed for work on stacked circuit boards or other long bolt applications. The precision-machined tip provides accurate fit and torque without slippage, allowing for work in close quarters. The Cushion-Grip™ handle allows for greater torque and comfort. Internal flanges inside the handle provide a solid, twist-resistant shaft anchor. The handle end is also color coded for easy identification.