Rotary 3434 Mower Blades for Bobcat Ferris Scag Snapper 21" Length 2-1/2" Width .204" Thickness 5/8" Center Hole Fits 61in. Deck

What It Is

This is a set of aftermarket rotary mower blades, 21 inches long, designed for 61-inch deck mowers from Bobcat, Ferris, Scag, and Snapper. They are meant for heavy-duty cutting on commercial or residential zero-turn mowers.

Fitment & Compatibility

Before buying, measure your current blade’s length (21 in.), width (2.5 in.), thickness (0.204 in.), and center hole diameter (5/8 in.). These dimensions must match exactly. The blade fits 61-inch decks on Bobcat, Ferris, Scag, and Snapper models—but verify your specific model number (e.g., Snapper ZTR 61-inch) against the seller’s fitment list. This is an aftermarket part, not OEM, so check if your mower requires OEM-only blades for warranty or safety compliance.

Key Things to Know

• Quality: Made from hardened steel (likely heat-treated), but at 0.204 in. thickness, they are thinner than some OEM blades—check if your deck can use them without excessive vibration.
• Installation: Easy if you have a socket wrench and blade removal tool. Torque bolts to manufacturer specs (usually 70-90 ft-lbs). Use thread-locker if recommended.
• Common Gotcha: The 5/8 in. center hole is standard, but some decks use a 7/8 in. or odd-shaped hole—measure yours first. Also, ensure the blade’s lift angle matches your deck’s design for proper grass discharge.
• Set Quantity: Confirm if this price covers all blades needed for a 61-inch deck (typically 3 blades). If not, budget for extras.

Should You Buy It

This is a solid choice if you need a budget-friendly replacement for a 61-inch deck and your mower brand is listed, but only if you’ve verified the exact dimensions and your deck doesn’t require OEM-specific blades. Skip it if you need thicker (0.250 in.) blades for heavy commercial use or if your mower has an unusual center hole.