No 2 are the main bottle tops. Should be milk bottle tops, most soft drinks and some water bottle tops. Some are not marked but you can tell from the strength of them.
Helping Hands project is a collaboration between disadvantaged employment support group Envision and Rotary Wyndham.
Envision is asking us to collect plastic bottle caps to help to make prosthetic hands for children in Third World countries. The bottle caps are turned into filament - a plastic thread used in 3D printers. The filament is then used to make prosthetic limbs.