The Wilkinson Sword Hydro 5 Skin Protection Regular Razor Blades in Blue come in a pack of 4 refill cartridges. Designed specifically for Wilkinson Sword razors, these cartridges are suitable for men who want to shave their chest, back, neck, face, and body. With 4 blades per cartridge, this product provides a comfortable and efficient shaving experience while helping to protect the skin. Perfect for those looking for a reliable and high-quality shaving solution.