This is a A-B1GR2003 BLADE-MOWER, 17-3/8", 5/8" PN: B1GR2003Main Description As Following : A-B1GR2003 BLADE-MOWER, 17-3/8", 5/8" P.N: B1GR2003 XHT (Xtreme Hardness & Toughness) blades feature a unique steel that incorporates boron, carbon, manganese, and other materials that ensure its strength. The blades are heat treated with the patented and independently tested Marbain heat-treating process. This process makes the blades 25% - 40% harder than standard lawnmower blades, making them the longest-lasting, safest, and most impact resistant lawnmower blades on the market.Center Hole: 5/8"Length: 17.350"Replaces: Ariens / Gravely: 3971900Thickness: .187"Type: High Lift - NotchedWidth: 2.250" Replaces: B1AR1002 SUNBELT CANADA , Crossed From: 03746500 ARIENS / GRAVELY , 03971900 ARIENS / GRAVELY , 13177 ROTARY , 3971900 ARIENS / GRAVELY Found in Section & Models : Sunbelt - Blades > Blades, Ariens / Gravely (UNDEFINED): SEVERAL, Ariens / Gravely MOWER, WALK-BEHIND: 911413 WAW 34 (34" Deck) Associated Items : New Also A-GR-P-ALLWEQUP And : XHT (Xtreme Hardness & Toughness) blades feature a unique blend of steel that ensures it's strength
and are heat treated with a process that results in making them 25% - 40% harder than standard
lawnmower blades. This makes XHT blades the longest lasting, safest, and most impact resistant
lawnmower blades on the market. Center Hole: 5/8" Length: 17-3/8" Replaces: Ariens / Gravely: 3971900 Thickness: .187" Type: High Lift - Notched Width: 2-1/4"