Manufactured from 316 stainless steel and barrel finished for a smooth, high shine surface finish. Sea Sure produces a wide range of pins from 20mm to 120mm long and between 5mm and 12mm diameter. They have a spring loaded mechanism that positively locks the pin in either the open or closed position. The standard head features an annular groove for attachment of a retaining wire if required for larger bespoke pins and retaining wires.