Blades 3/8x3x12 DBL Edge Flat (Pair)

What It Is

This is a pair of double-edged flat mower blades, measuring 3/8-inch thick by 3 inches wide by 12 inches long. Designed for zero-turn mowers and commercial walk-behinds that use a flat (non-angled) blade profile, they’re meant for heavy-duty cutting and mulching in high-use turf maintenance.

Fitment & Compatibility

Before buying, verify three things:

• Exact measurements: 12 inches length (hole center to tip), 3 inches width, 3/8-inch thickness. Measure your current blade’s center hole diameter (likely 5/8” or 7/8”) and ensure the center hole matches—this listing doesn’t specify, so check the seller’s details or your OEM spec.
• Deck size & brand: These are common on 48- to 60-inch commercial decks from brands like Exmark, Scag, Toro, and Gravely. But not all models use flat blades—some use a high-lift or gator-style blade. Confirm your machine’s OEM blade part number or blade style (flat vs. curved).
• OEM vs aftermarket: These are aftermarket blades. Compare the blade thickness and hole pattern to your OEM blade; a 3/8-inch thickness is heavier than many stock blades (typically 3/16” to 1/4”), so they may require a different spindle or bolt torque.

Key Things to Know

• Quality: 3/8-inch thick steel is very durable and resists bending on rocks or roots, but it’s heavier—expect more strain on the spindle and engine, and possibly reduced blade tip speed.
• Installation difficulty: Moderate. You’ll need a torque wrench (common spec: 70–90 ft-lbs). Double-edged blades can be installed either way, but the flat design means no airlift—so they’re for cutting, not vacuuming grass into the deck.
• Common gotchas: These blades may not fit decks with a built-in blade brake or clutch due to the extra thickness. Also, flat blades produce less lift, so they can leave clumps in wet grass. Check your deck’s blade bolt length—thicker blades may require longer bolts.
• Pair vs single: This is a pair, so two blades total. If your deck uses three blades (e.g., 60-inch), you’ll need two pairs.

Should You Buy It

Buy these if you need heavy-duty replacement blades for a commercial zero-turn that uses flat blades, and you’re willing to trade some lift for durability. Skip them if your mower requires high-lift or mulching blades, or if you need exact OEM specs—these are aftermarket and may not match every deck’s blade pattern.