From the manufacturer:
Blades made of chrome steel bevel and round off edges and offer high hardness, high wear resistance and high strength of touching fatigue. The handle is made from the wood of a Schima superba tree, an eco-friendly broadleaf tree species that produces excellent timber. The wood is hard, dense, smooth and coated with resin for longevity. Available in four sizes. The larger the number, the wider the bevel.
- Length: 5.71 in. (14.5 cm)
- Width: 1.06 in. (2.7 cm)
- Size #2 Bevel Width: 0.06 in. (1.4 mm)
- Size #2 Recommended Leather Thickness: 5 to 7.5 oz. (2 to 3 mm)
- Size #3 Bevel Width: 0.08 in. (1.93 mm)
- Size #3 Recommended Leather Thickness: 7.5 to 9 oz. (3 to 3.5 mm)
- Size #4 Bevel Width: 0.09 in. (2.31 mm)
- Size #4 Recommended Leather Thickness: 9 to 12.5 oz. (3.5 to 5 mm)