The Klein Tools Keystone Screwdriver features a precision-machined 3/8" tip engineered for an exact fit on large flathead fasteners, making it the go-to choice for service panel work, wire trough cover installations, and heavy-duty electrical rough-in applications. Its 8" heat-treated round shank is reinforced with a hex bolster that enables wrench-assisted turning for maximum torque on stubborn fasteners. The Cushion-Grip™ handle with internal anti-twist flanges delivers all-day comfort and a solid, slip-free grip, while Tip-Ident® provides instant tip orientation at a glance.

Specifications

Tip Type Keystone (Flat Head)
Tip Size 3/8" (9.5 mm)
Shank Type Round with Hex Bolster
Shank Length 8" (20.3 cm)
Overall Length 13.44" (34.1 cm)
Material Tempered steel, chrome-plated
Handle Material Rubber (Cushion-Grip™)
Handle Colour Black
Magnetic No
Insulated No
Special Features Hex bolster, Tip-Ident®, heat-treated shank, Made in USA
Standard Compliance Meets or exceeds ASME/ANSI specifications
Weight 8.8 oz (249 g)