The Stanley Tools FatMax Flared Tip Bolster Screwdrivers are colour coded and feature icon ID for quick recognition of tip pattern and size. They have a chrome vanadium steel bar that resists bending and snapping. The tips have been hardened for durability and precision machined for excellent head to fastener fit. They are fitted with a tri material handle, the inner core is moulded directly to the blade tang and then a polyprop outer with a TPR overlay for grip and comfort. This large diameter handle provides excellent torque transmission and grip. The design also features a tapered waist for fast low torque tightening. These screwdrivers incorporate an additional hexagonal bolster for high torque applications, when used with an open end spanner. The Stanley Tools FatMax Bolster Screwdriver Type: Flared. Size: 6.5mm. Blade Length: 150mm.