This is a Package of Five #28 Concave Carving Blades from X-Acto.

FEATURES: High quality carbon steel For whittling and curved shaping Use on balsa, leather, linoleum and plastic Concave edge Carded packaging

INCLUDES: Five #28 Concave Carving Blades

REQUIRES: Hobby Knife

SPECS: Length: 1-3/4" (4.4cm) ir/kh  

BOX DIMENSIONS: .75" W. X .38" H. X 5.38" L. BOX WEIGHT: .08 LBS.