Home Piston£205.00PriceAdd to CartDescriptionThe aim is to find the brass ball. A unique, seven-stage, sequential discovery puzzle. Difficulty: 7/10 DetailsMachined from solid brass, Piston measures 48mm diameter, 96mm in height, and weighs 1.15kg. The brass is left unfinished, leaving it to slowly patinate and darken with use. SpoilersIf you're stuck on a puzzle, email firstname.lastname@example.org and ask for a clue.