| Cover & Plate | Cover Only | Mirror |
|---|---|---|
| 12.7mm | – | – |
| 19.05mm | – | – |
| 25.4mm | – | – |
| 31.75mm | – | – |
| 38.1mm | 38.1mm | – |
| 50.8mm | 50.8mm | 50.8mm |
| 63.5mm | – | – |
| 76.2mm | – | – |
| 38.1mm |
| 50.8mm |
| 50.8mm |
| 50.8mm |
| 38.1mm |
| 50.8mm |
| Satin | Mirror |
|---|---|
| 38.1mm | – |
| 50.8mm | 50.8mm |
Round knock-in caps in a base plate and cover style are designed to provide a neat, professional base finish for round handrail posts and stainless steel tube installations. They are commonly used at floor or deck level to conceal fixings, anchor bolts, or mounting hardware, helping deliver a clean architectural appearance once the handrail post is installed. By hiding structural fixings, these components create a refined and uncluttered look while still allowing for secure attachment of the post to the supporting surface.
This style of knock-in base system is widely specified for balustrades, stair rails, balconies, walkways, and marine installations where both appearance and corrosion resistance are important. The knock-in design allows the base plate to provide the structural fixing point, while the cover fits neatly over the top to hide fasteners and create a finished appearance. Depending on project requirements, different options are available, including complete cover and plate sets, cover-only versions for retrofit applications, or mirror-finish components for premium architectural installations.
Selecting the correct option allows installers to match both the functional and visual needs of the project. Satin finishes are typically chosen for contemporary architectural designs and high-traffic areas, while mirror finishes are often specified for feature handrails and high-end interiors. The sizing table should be used to accurately match the component to the tube diameter, ensuring a precise fit and consistent alignment across all posts.
Round knock-in caps of this style help streamline installation, improve visual quality, and protect fixings from exposure. For projects requiring a tidy base detail, long-term durability, and a professional finish, these round knock-in base plate and cover systems offer a reliable and industry-standard solution.
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