Utility Bar Twin Pack, 7in & 15in, from Hultafors do exactly what their names suggest. 

The 108/15 Wrecking Bar is a versatile steel bar that can be used for pulling out nails and for breaking, scraping and lifting, in fact Hultafors has provided it with 3 different functions for pulling out nails. Length: 380mm (15in). 

Meanwhile, the Hultafors 108 Mini Wrecking Bar can be used to pull small nails, strips of wood, or open cans. It also has three different functions for pulling out nails and the thin contact surfaces make it easy to use in narrow spaces. Length: 190mm (7.1/2in).