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Kincrome

Kincrome 21mm 3/8" Square Drive Deep Socket, 6-Point Mirror Polish Chrome Vanadium

★★★★★
101 reviews · 444+ sold
$34.34 $51.50 -33% OFF
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Last purchased 7 minutes ago by someone in Canberra
Ships in 1-2 business days Australia-wide delivery
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The Kincrome 21mm 3/8" square drive deep socket is a single-piece chrome vanadium socket for reliable fastening. Its extra depth clears long bolts and protruding studs, while the 6-point profile grips the fastener flats squarely to reduce the risk of rounding.

  • Socket size: 21mm
  • Drive: 3/8" square drive
  • Profile: 6 point
  • Material: Chrome Vanadium Steel (Cr-V)
  • Finish: Silver, rust resistant
  • Quantity: 1 piece

The 21mm is a popular wheel-nut size, and this deep socket fits any 3/8" drive ratchet or extension bar for confined-space automotive and machinery jobs.

More about this product

The Kincrome 21mm 3/8" Square Drive Deep Socket is a durable tool made from chrome vanadium steel with a mirror polish finish, designed for professional and DIY use.

  • 21mm deep socket with 3/8" square drive
  • 6-point profile for secure fastener engagement
  • Manufactured from chrome vanadium (Cr-V) steel
  • Mirror polish, rust-resistant finish
  • Single socket, supplied individually

Questions & Answers

What drive does the 21mm socket use?

A 3/8" square drive, fitting any 3/8" ratchet or extension.

What fastener size does it fit?

It fits a 21mm hex nut or bolt head, a common wheel-nut size.

Is this a deep socket?

Yes. The extra length reaches nuts on long bolts and protruding studs.

How many points does it have?

Six points, for a secure hold on the fastener flats.

What is it made from?

Chrome vanadium steel (Cr-V) with a rust-resistant finish.

Standard Shipping Australia-wide
Ships in 1-2 business days from our Australian warehouses
30-Day Returns
Change your mind? Return within 30 days for a full refund. Item must be unused and in original packaging.

Customer Reviews

4.3 ★★★★☆ 142 reviews
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✓ Fast Delivery ✓ Great Quality ✓ As Described Verified Purchases
B
Ben A. 📍 Fremantle WA
★★★★★
2 months ago
✓ Verified Purchase

Quick delivery to regional QLD

The Kincrome 21mm arrived fast and works perfectly out of the box.

G
Grace W. 📍 Parramatta NSW
★★★★★
2 months ago
✓ Verified Purchase

Perfect gift — loved it

Bought this as a replacement for one I have had for years and I am glad I upgraded. The new one is noticeably better. Had a tracking number within a few hours of ordering. Packaging was excellent, nothing damaged. Already told a few mates about this site. Great prices and genuinely fast shipping.

O
Oliver H. 📍 Rockhampton QLD
★★★★★
2 months ago
✓ Verified Purchase

Arrived well packed

The Kincrome 21mm is a solid buy. I was a bit unsure about the size from the photos but it is perfect in person. Delivery was faster than expected. Very satisfied with this purchase.

N
Natalie F. 📍 Launceston TAS
★★★★★
3 months ago
✓ Verified Purchase

Better than expected

No issues at all. Fast delivery and exactly as described.

C
Chris N. 📍 Mackay QLD
★★★★★
3 months ago
✓ Verified Purchase

Great value for money

Spent a while looking for the right Kincrome 21mm and this kept coming up as the best value. I can see why — quality is impressive for the price. Delivery took just 2 days to Townsville which is great. Packaging was solid and everything intact. My partner and I both use it daily now. Highly recommended.

R
Rebecca J. 📍 Albury NSW
★★★★★
3 months ago
✓ Verified Purchase

One of my best online buys

Quality product at a fair price. Delivered quickly. Happy.

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