This is a Package of Five #21 Straight Cut Blades from Excel.

FEATURES: Light duty carbon steel blades. Fit K1, K3, K17, K18, K30 and K40 Excel handles. Straight edge for trimming wood, plastic, paper and leather. Contained in a clear plastic tube with a lid. Carded packaging.

INCLUDES: Five #21 Straight Cut Blades.

SPECS: Length: 1-9/16" Width: 1/4" Edge: 1" ir/kh  

BOX DIMENSIONS: 2.13" W. X .50" H. X 4.50" L. BOX WEIGHT: .02 LBS.