Commercial Copperhead mulching blade with teeth fits Walker 42" decks with rear discharge. This is the Right hand blade replacing 5705-3, 15-6414. Blade also fits the 62" deck using (3) blades. Refer to your manual to match by blade OEM part #. Mulching blades feature a high lift edge for a smooth, even cut. The teeth at the end of the blade ensure a quick shredding of grass clippings and debris.