Bosch 2608900580 HEX-9 Multi Construction Drill Bit 7mm The Bosch 2608900580 HEX-9 drill bit has a 7mm diameter and is ideal for drilling practically all materials including concrete, brick, wood, plastic and more. The 1/4\" shank provides optimum power output whilst the carbide centering tip ensures a precise start-up and good control. This model is extremely durable thanks to its diamond ground-cutting edges. Features: Suitable for drilling practically all materials including concrete, brick, wood, plastic, thin sheet metals, ceramic and tile 1/4\" hex shank for optimum power transfer The carbide centering tip ensures a precise start up and good control when drilling Diamond-ground cutting edges for wear-resistant Specification: Pack Qty: 1 Diameter: 7mm Working length: 90mm Overall length: 150mm