This package includes 600 nails in 4 different sizes and an 8oz hammer..Mr. Pen high-quality nails don’t bend when you hammer them in. They are sturdy, straight, and sharp enough to make all your tasks effortless and produce very satisfying results, and Mr. Pen hammer is an ergonomic non-slip soft handle..The sizes of the nails are: 35 x 4 – 30 x 3.5 – 25 x 3 – 20 x 2.5 mm, and the hammer size is 6.25 inches..Mr. Pen nail assortment kit and hammer comprehensive set is ideal for multiple applications such as general repair, woodworking, crafting or even professional use due to their durability and versatility..The nail set includes a convenient kit that allows you to separate them by size, making your job easier.