Use a three-hole punch and three 1-1/4 inch brads.

三孔打孔机、一又四分之一英寸的平头钉装钉。

An awl with a beveled tip, used to make holes in wood for brads or screws.

锥钻，打眼钉钻头倾斜的钻子，用于在木头上钻孔以钉角钉或螺钉。