Grass cutting blade for lawn tractor lawn mower mower TRACTORINO SIMPLICITY The blade is to be used in combination with our code 153520 for 38" INCH cutting deck CHARACTERISTICS: Length: 409 mm 40.9 cm Centre hole diameter: 19 mm Side hole diameter: 10 mm Side hole spacing: 66 mm CODE: 153521 ORIGINAL CODE REFERENCE: 1704856A S IM PL ICI TY