4-1/2" Good general purpose blade for wet/dry applications, block concrete, pavers and brick. Users include General Contractors, Landscapers and UtilitiesBZ-GP45SKU: BZ-GP45$15.95PriceQuantity*Add to CartBuy NowSPECIFACTIONS4 1/2" x .070" x 7/8"-5/8", 10mm rim