There are three different sizes of O'Dwyer Anvils 20kg, 45kg, and 90kg (not available online). The 20kg and 40kg blacksmith anvils are ideal for the mobile farrier. The 20kg is most suited to jobs that need the farrier to move the anvil from the vehicle. The 40kg anvil is best left on the rig, and is best used for pleasure shoeing and idea for hot shaping of shoes. Made from high tensile 4140 steel, the O'Dwyer anvils are an essential too for the professional farrier. Mustad Saddleworld stock a range of anviles and stall jacks from brands including O'Dwyer, Yoder and more.