Greenfield 20V impact wrench review: warranty first, specs never

The Greenfield 20V is our Best Warranty impact wrench: a 6-month cover stated on the listing, from an established Philippine brand selling through its own official store, at around ₱4,500. What it doesn’t give you is a torque figure, or any sockets.

What can it do?

Honestly, we can’t tell you precisely, and that’s the problem. Greenfield publishes no torque rating, no rpm figure, and no impact rate for this wrench, and neither its official listing nor its Philippine distributors carry a spec sheet. For a category where torque is the defining number, that’s a strange omission.

What we can confirm from the listing: 20V, a 1/2in square drive, one 2.0Ah battery, a charger, and a hard case. The 1/2in drive is the right standard for car lug nuts and impact sockets, so it’s aimed at the same jobs as everything else here.

Why does the warranty matter so much?

Because in this category it’s rare, and because Greenfield can actually honor it. A 6-month warranty stated on a listing is worth something when the brand has distributors and dealer stock across the Philippines. Compare that with the Shopee-first wrenches, where warranty terms are seller-stated and there’s no service center to walk into if the motor fails.

That’s the trade this tool asks you to make. You’re paying roughly double the KEELAT kits for support instead of specs and accessories.

What’s missing from the box?

Two things that matter. First, impact sockets. Every KEELAT kit here includes eight to ten; this one includes none, so you’ll need to buy a set. Don’t be tempted to use ordinary chrome sockets, which can crack under hammering. Our impact wrench buying guide explains why.

Second, the second battery. One 2.0Ah pack is small for a tool that drains this hard in bursts, and the rivals at half the price ship two 4,000mAh packs. There’s also no statement that the motor is brushless, which at this price you would expect.

Is it sulit?

Around ₱4,500 as of July 31, 2026. Check the latest price on Shopee. Value depends entirely on how much you weigh after-sales support.

Against our Best Overall, the INGCO COSLI23011 at around ₱5,600: INGCO also has PH dealer support and a 6-month service warranty, and adds a published 300Nm, a brushless motor, two speed ranges, ten impact sockets, driver bits and a work lamp. That’s a lot more tool for a small step up, and it’s the comparison that keeps this one out of the top spot.

Against the KEELAT kits at around ₱2,000, you’re paying more than twice as much for a warranty and a brand name, with fewer accessories and a smaller battery.

Who should buy it

Buy this if brand support in the Philippines is your deciding factor and you’re already buying sockets separately, for example someone who’s had a no-name tool die and doesn’t want to repeat it. If you want that support and specs, spend a little more. If your budget is fixed near ₱2,000, buy a Shopee-first kit knowingly. See how it ranks in our best impact wrenches in the Philippines roundup, or browse more on our Home Improvement page.

Alternatives to consider

For a small step up, the INGCO COSLI23011 is our Best Overall: the same class of PH brand support plus a published 300Nm, brushless motor, sockets and a work lamp. If you’d rather put the money into batteries and accessories, the KEELAT KID004 is our Best Value at around ₱2,000 with two 4,000mAh packs and 19 pieces.