The wheel sits within the centre of the cutter and it is this that cuts the pipe.
Semi-automatic ratchet pipe cutter head
The head of a ratchet pipe cutter has the same structure as a semi-automatic single-handed pipe cutter, with a centre ring for the pipe to be slotted into.
Ratchet pipe cutter wheel adjustment
The ratchet pipe cutter is semi-automatic meaning it has to be adjusted when the pipe is inserted to the correct size. This is done by turning the adjustment handle on the cutter head.
Handle of a ratchet pipe cutter
The handle allows easy cutting in awkward places. It is made from lightweight fibreglass.