The bosch 5 piece concrete drill bit set is a high-performance masonry drilling kit designed for use in concrete, masonry, natural stone, and cast stone. Each drill bit features a specially hardened tip optimised for hammer drilling, delivering precise boreholes even in hard concrete. Accurate bore sizing ensures a stable rawlplug fit, making these bits well suited to fixing tasks in brick and blockwork. The set covers a practical range of common sizes and is compatible with all standard impact drills and drill drivers fitted with three-jaw chucks suitable across all major power tool brands. The bits can also be used in rotary mode when drilling in hollow brick, adding further versatility on site. Supplied in a compact plastic storage case with a transparent lid, the set keeps bits organised and protected between jobs. Features and benefits: hardened tips designed for hammer drilling in concrete and hard masonry precise boreholes for a reliable rawlplug hold compatible with all major power tool brands and standard three-jaw chucks suitable for both impact mode and rotary mode hollow brick compact plastic case with transparent lid for organised, protected storage includes five commonly used sizes: 4, 5, 6, 8, and 10 mm specifications: weight: 0.14 Kg dimensions: 160 x 55 x 18 mm contents: 5 concrete drill bits, ø 4 5 6 8 10 mm