Prima Finnabair Mechanicals - Label & Plate (26 ratings) £5.75 Quantity: at £5.75 each Add To Basket 7 pieces per package. 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 jewellery, mixed-media arts, home decor and altered art.