The hex-headed set fastener is very common, but can be hidden behind pipework, and may be difficult to reach. Laser tools offers a solution.
The solution comes in the form of its new flexible bit spanners.
The spanners have a flexible joint, allowing the bit to swivel through a full 240°, and their slim design enables them to get into particularly tight spaces. There are five spanners in each set, all double-ended and offering ten commonly used bit sizes per set.