Solid metal pintles are used to ensure castors are securely fastened into position. Solid pintles are maintenance free
Threaded metal pintles are used when a variety of thread sizes are required
Solid and Threaded metal pintles fit all of our pintle castors
Other sizes available for quantity orders
https://www.richmondau.com/product/metal-pintle-parts-rubbermaid-trolley-castors-124pintle-p21/