Century 30mm Round Knob - Antique Black
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The Century 30mm Round Knob offers a timeless design with a modern twist, featuring sleek curves and a subtle ridged detail around its circumference. This understated yet elegant knob seamlessly fits into both traditional and contemporary interiors, bringing a refined touch to kitchens, bathrooms, wardrobes, or commercial spaces. Crafted from durable, recyclable zinc alloy, the Century Round Knob combines long-lasting quality with a sophisticated, versatile aesthetic, making it the perfect finishing touch for cabinetry or furniture.
In stock — 20+ units available
• Dimensions: 30mm (Diameter) x 30mm (Width) x 17mm (Projection)
• Weight: 0.043kg
• Material: Zinc Alloy (Durable and fully recyclable)
• Finish Options: Matt Black, Polished Chrome, Satin Nickel, Pewter, Old America, Brushed Brass, Antique Black, Antique Brass
• Complementary Products: Matching handles available in 96mm, 128mm, and 160mm sizes
• Installation: Includes 1 x Knob, 1 x 22mm screw. Single screw fixing.
We offer free shipping Australia-wide on orders over $300. All other orders incur a flat-rate delivery fee of $16 + GST. Most in-stock items ship same-day when ordered before 1:00pm (AEST), with express delivery typically within 1–2 business days.
Please note that some products have specific lead times—check the product details before purchasing.
For international shipping or more detailed information, view our Shipping page.
All Castella products are backed by a lifetime warranty covering material and finish defects under normal use. To ensure longevity, proper installation and care are essential.
Exposure to coastal conditions or high humidity may accelerate ageing and is not always covered.
For full details or to make a claim, visit our Warranty page.
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Why Castella
Exceptional hardware starts with considered detail. Each piece is crafted for its design integrity, material quality, and timeless appeal—made to elevate spaces and stand the test of time. Backed by a lifetime finish warranty, 60-day returns, and the support of our in-house design team, we’re here to make every detail feel effortless.

Fast, free shipping on orders over $300

60-day returns for peace of mind

Lifetime finish warranty on all products

Expert support from our design team
Century Collection
The Century Collection celebrates timeless craftsmanship and vintage-inspired design, bringing a touch of classic elegance to any space. With intricate detailing and a variety of finishes, including Antique Brass, Pewter, and Old America, each handle and knob is meticulously crafted to evoke the charm of traditional interiors. Perfect for cabinetry in kitchens, bathrooms, and wardrobes, the Century Collection offers enduring style and quality, combining heritage aesthetics with the durability needed for modern living.
Century 128mm Handle - Satin Nickel
$27.00
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$27.00
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Century 96mm Handle - Satin Nickel
$22.00
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$22.00
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Century 96mm Handle - Polished Chrome
$22.00
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$22.00
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Century 96mm Handle - Pewter
$22.00
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$22.00
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Century 96mm Handle - Old America
$22.00
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$22.00
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Century 96mm Handle - Matt Brushed Brass
$22.00
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$22.00
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Handmade in Tasmania.
Discover collections crafted by local artisans using Tasmania’s finest sustainably sourced timbers — including rare Hydrowood, reclaimed from submerged forests beneath Tasmania’s lakes.
FAQs
Yes. We recommend 316 Stainless Steel and PVD-coated products for enhanced durability in coastal environments. These materials are naturally resistant to corrosion and designed to withstand harsher conditions.
Yes, many of our ranges are designed to complement each other. If you’d like guidance on selecting matching pieces, reach out to us at castella@castella.com.au — we’re here to help.
Visit our Care & Maintenance page for detailed cleaning guidance by material type. Taking a little extra care will ensure your hardware continues to look beautiful for years to come.
Yes, all Castella hardware includes the appropriate screws and fixings required for installation. If you need alternative screw sizes or specifications for your project, please contact us at castella@castella.com.au, and we’ll be happy to advise.
Our standard screws are designed for common joinery thicknesses. If you require alternative screw sizes or specifications, please contact us at castella@castella.com.au for tailored advice.
Yes, we can provide replacement screws and fixings for Castella products. Please contact us at castella@castella.com.au with your product details, and we’ll assist you.
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