Prima Finnabair Mechanicals - Tin Hearts (12 ratings) £7.15 Quantity: at £7.15 each Add To Basket 10 pieces per package. Fab Steampunk vibe. Flatback. Mechanicals – metal elements and embellishments by Finnabair - inspired by unique flea market findings and vintage pieces. Easy to assemble: they may be joined with brads or glued together, great for mixing and matching and building, unique, personal look. Perfect for custom made jewelry, mixed-media arts, home decor and altered art.