Male adaptor, threaded on one side socketed on the other, to be solvent weld or glued. Take note of the different BSP diameter (25mm) and Inner Diameter (25mm).
Special chemical glues can be used to create a solvent weld which will fuse the pip and fitting into one. These fittings can typically be used in cases where there is a female threaded component that needs to be screwed in. Should the piping or component not have male threading of its own this male adaptor fitting is exactly the fitting to use.

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