Download our guide to picture hanging fixings and options. If you have hollow walls made with plasterboard (eg Giproc) then simple, nail in, brass picture hooks are ideal for pictures with a weight of up to 5-6kg. If you have cement walls you have two options. You can drill in and use 6mm plastic wall plugs and then simply add a screw. The second popular option is buying stick on (eg Command brand hooks) strip hooks.