The handle of the boiler pump multitool is made from plastic. The underside of the handle is moulded to fit comfortably around your fingers.
The handle allows for a solid grip on the tool, making it much easier to unfasten stiff screws.
The handle also has space to store the detachable bit that you are not using so that it won’t get lost.
Boiler pump multitool shaft
The shaft of the tool is made from high carbon steel. Its length allows you to reach into tight spaces to loosen or tighten screws if necessary.
Boiler pump multitool bit holder
The bit holder is magnetic, which allows you to attach or detach the bit you want to use without having to screw it into the tool. It also prevents the bit from falling out while you’re working.
Boiler pump multitool bits
The multitool comes with two double-ended magnetic bits: a 4mm (5/32″) allen key, a 5mm (13/64″) allen key, a 6mm (15/64″) allen key and a 4mm (5/32″) flat screwdriver.
All allen key measurements above are A/F (across flats), which means that they indicate the distance between two opposite edges of the hexagonal end of the tool.
Don’t worry that these measurements are provided only in millimetres (metric) by some vendors. If you’re used to working in inches (imperial), all you need to do is just remember which size of allen key bit fits in your pump’s screw heads, so you only need to remember the number 4, 5 or 6!
There is one more bit located in the centre of the top part of the handle.
This part of the tool is designed for turning bleed screw cover plates.
An added bonus of boiler pump multitool bits
The tips of the bits are magnetic, which means they will attach firmly to the screws. It also means you’re less likely to drop them once you have unscrewed them.