Stens 335-707 PK2 Mulching Blades - 21 3/16"

What It Is

The Stens 335-707 PK2 is a set of two mulching blades designed for 21-inch walk-behind mowers, converting grass clippings into fine particles to return nutrients to the lawn. These are aftermarket replacements for OEM blades on select brands like Toro, Snapper, and John Deere.

Fitment & Compatibility

Before buying, measure your blade length—these are 21 3/16" from tip to tip, not 21". Check your mower deck size (must be 21") and the center hole diameter (these use a standard 1" center hole with a 5-point star drive pattern). Common compatible models include Toro Recycler 20021, Snapper 21" steel decks, and John Deere JX75. Cross-reference your OEM part number: Stens 335-707 replaces Toro 110-3052, Snapper 704084, and John Deere GY20570. Avoid if your mower uses a 7/8" center hole or different drive pattern.

Key Things to Know

• Quality: Stens is a reputable aftermarket brand; these blades are heat-treated and balanced, comparable to OEM, but may require light balancing check before install.
• Installation difficulty: Easy—remove the old blade, install with the lift wings pointing up toward the deck. Use a torque wrench to tighten the bolt to 30-40 ft-lbs.
• Common gotcha: These are mulching blades, not bagging or side-discharge. Using them with a bagger may clog; they work best with a mulching plug installed.
• Set includes: Two blades, so check if your mower uses one or two blades (most 21" decks use one, but some dual-blade models exist).

Should You Buy It

Buy if you own a 21" Toro, Snapper, or John Deere walk-behind with a 1" star center hole and want a durable aftermarket mulching blade for fine clippings and less bagging. Skip if your mower uses a different center hole or drive pattern, or if you need a high-lift bagging blade.