Material: Bookbinding punching tool is made of high quality wood with smooth edges, clear holes and thick handfeel, can be reused for a long time. Hole Punching Set: Awl: 22x2.6x1.35cm/8.66x1x0.53inch, Hole: 3mm; Base: 22.3x3x2cm/8.66x1.18x0.78inch. Hole spacing is 3.3mm/0.13inch, there are 34 holes with a diameter of 3mm, which can be used to make a variety of different sizes of notebooks. Easy to Use: Simply fold the paper in half and insert it into the cradle so that the holes can be punched at equal distances, which helps to accurately align the holes and hole spacing on the paper and improve your work efficiency. Wide Application: Our bookbinding tools are suitable for a variety of bookbinding techniques for DIY crafts, notebooks, journals and planners. Perfect Gift: Our book binding hole punching guide kit is easy to use. Great for craft enthusiasts or beginners trying to bind books, a perfect DIY gift option!