Square Tube Expanders
Square tube expanders with 10mm hex or cap head bolts for fitting castors into square steel tube legs. Choose by tube internal size.
20 products
Questions before you order
Quick answers to what buyers ask most.
Which tube expander fits my trolley leg?
Measure the outside size of your tube and its wall thickness, then match them to the tube size given in the expander listing.
Bolt-hole castor or threaded insert?
A threaded tube insert gives a bolt-hole castor a threaded fixing inside a hollow tube — match the thread size (for example M10 or M12) to the castor's bolt.
What is a truck lock for?
A truck lock (floor brake) holds a trolley still while it is loaded and unloaded. Check the plate and hole centres in the listing against your trolley.
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