This set of 3 plastic cupping pens are cheaper, less durable and provides less penetrating force than the metal or aluminium cupping pens. It is useful for the cupping practitioner who deos not regularly perform cupping and would like to reduce expenditure on cupping pens. However it is still good enough for cupping. Adjustment of lancet penetration into the skin is possible by full or partial twisting the end of the cupping pen. Cupping pressure exerted by the lancet on the skin is maintained at a constant level by a spring loaded mechanism in the cupping pen.