C.S. Osborne No 21 single edge creasers have a hard wood handles with brass ferrule.
These will enhance the edges of your leather. Place long side of tool against edge of leather as a guide and make impression with short side. Round edges with edge tool before using creaser.
Available in 5 sizes.
Size 1 1/16"
Size 2 5/64"
Size 3 3/32"
Size 4 7/64"
Size 5 1/8"