Becho 40-Piece Metal Hollow-Wall Anchor Set, Carbon Steel, M4 to M6

For mounting an item on plasterboard with a cavity behind it, the Becho set offers metal anchors in three sizes. The expanding arms spread behind the board, while anti-rotation teeth help keep each fixing in place. It includes 40 anchors: 20 M438mm, 10 M552mm and 10 M6*65mm. These are cavity fixings, not a general-purpose choice for solid walls.

Best use cases

This set is suited to fastening items to hollow partitions or plasterboard where there is space behind the board for the anchor arms to expand. That makes it relevant for jobs such as attaching a fixture to a room divider or another soft-faced partition, provided the board thickness matches the selected anchor. The listing describes the fixings as suitable for heavy objects, but gives no load rating, so the set alone does not establish how much weight a particular installation can support.

The three lengths offer options for different board thicknesses. The supplied details specify M552mm for single-layer gypsum board 6–13mm thick and M665mm for 14–32mm. They do not give a consistent board-thickness range for the listed M438mm anchor, so avoid assuming it suits a particular board based on the separate M432mm reference in the description.

Where it shines

Unlike a fixing that relies only on grip at the board’s front surface, these anchors use expanding arms to create a wider bearing area behind the board. Anti-rotation teeth are also intended to resist the fixing turning during installation. Together, those features make the set more specifically suited to cavity-wall work than a basic plug intended for a different substrate.

The screw has a combination head that accepts either a flat or cross screwdriver. That gives some flexibility if you are working with the tools already on hand. In a practical installation, select the anchor for the board thickness, drill the required hole, then allow the arms to expand behind the board as the fixing is secured. The product instructions say the drilling depth must be 10mm longer than the plug, account for that before starting, particularly where the cavity is shallow.

What matters most

The anchors are made from carbon steel and supplied in silver. The pack contains 20 M438mm, 10 M552mm and 10 M6*65mm fixings, so it provides a mix of sizes rather than a large quantity of one length. That is useful when a job involves different board thicknesses, but less tailored if you need many anchors of a single size.

A key buying distinction is the wall behind the surface. These fixings are designed to expand into a cavity, they are not presented as suitable for solid masonry or surfaces with no space behind them. If you are choosing between a cavity anchor and a fixing designed for a solid wall, match the type to the substrate rather than relying on the metal construction alone. No load capacity is stated, so the anchor dimensions and material should not be treated as a rated weight limit.

When it makes sense

A solid pick if you need a mixed-size set for hollow-wall or plasterboard work and can identify the board thickness before installation. The expanding arms, anti-rotation teeth and two screwdriver-drive options address practical parts of fitting a cavity anchor, while the three lengths give you a choice across the specified board ranges.

You may want to skip it if the fixing point is in a solid wall, or if your project requires a confirmed load rating or a specific quantity of one size. Those details are not provided here, and the M4 board-thickness guidance is inconsistent. If you prioritize a clearly specified load limit or exact compatibility for every anchor size, look for a product listing that states those details before choosing.