Lubricant - BS-40 (400ml)

BS-40 in a 400 millilitre aerosol - the largest of the three sizes we carry, after the 100ml and 200ml. Like Conta and Tangit, this is a product most customers ask for by its brand: BS-40 is what people say when they mean the thin penetrating spray that frees seized bolts, silences squeaking hinges, drives water out of damp electrics, loosens rusted mechanisms and cleans grease and adhesive residue off metal. The large can belongs on a workshop bench or in a maintenance store rather than in a pocket, where it gets used several times a day and the smaller cans would be a nuisance. The straw in the cap puts the spray into a thread or a pivot rather than over everything around it. A light penetrant, not a grease.