Why this rolling pin earns its place
At 61 cm this is a sheeting pin rather than a domestic one. The length means a sheet of pastry comes out across its whole width in a single pass, so you are not working in overlapping strips and building thick and thin patches into the sheet — the fault that shows up later as a base that bakes unevenly and a tart that shrinks on one side. The 4.5 cm diameter keeps it slim, and a slim pin is one you steer with your palms rather than lean on: you feel where the dough is standing proud and put the pressure exactly there, instead of letting a heavy barrel decide the thickness for you.
Polyethylene is the practical choice on a wet bench. There is no grain to lift or split, and nothing for a paste of flour and fat to work its way into, so the pin can be washed down properly and dried rather than just wiped over — the standing compromise with a timber pin, which cannot take a soaking without warping. Dough also releases from a smooth polymer surface more readily than from a porous one, so a sheet needs less dusting flour to keep it moving, and less dusting flour means less dry flour worked back into a dough you have already balanced.
