Hand Tools

How cradle height and driving pin diameter decide whether a watch band tool works, and how to match both to a slim bracelet or a thick diver's band.

How a watch band tool pushes a link pin out of a bracelet, the parts that matter on the tool, and what it takes to resize a strap at home.

How the 2072, 2073 and 2077 tool box codes form a size ladder, what each step holds in practice, and how to pick the size to match your tools.

The fittings and low pressures involved in inflating balls, air beds and toys, and how to avoid the over-inflation that ruins seams and valves.

How a floor pump differs from a foot pump in volume, pressure and effort, and which one belongs in a workshop that looks after bicycles and cars.

Why van and 4x4 tyres need volume rather than pressure, how vertical and horizontal pump layouts differ, and which configuration suits a working vehicle.

What separates a heavy duty foot pump from an ordinary one, how twin barrel and LCD models differ, and which of nine configurations suits daily work.

How Schrader, Presta, needle and cone adapters differ, what each one inflates, and how to work out which fittings a pump actually needs.

How cylinder count changes the air moved per stroke, what that does to stroke counts on real tyres, and where a third cylinder stops paying for itself.

The pressures bicycle tyres actually run at, why a narrow barrel beats a wide one, and which valve fittings a pump needs to cover every bicycle.