ROLLINGDOG Mini Roller - 4Inch Extender Multi Angle Long Handle with Velour Paint Cover for Detail Painting at Awkward Corners and Architrave, Behind Radiators(Overall Length 19In) - Amazon.com
No Nonsense 4" Long-Handled Mini Roller Set 3 Piece Set - Screwfix
Radiator Roller Kit Frame and 2 Refills | FaithfullTools.com
ProDec Advance ARFR004 24 inch Long Soft Grip Flexible Mini Paint Roller Frame Ideal for Painting Behind Radiators, Pipes and Gutters Compatible with All 4 inch Mini Paint Rollers : Amazon.co.uk: DIY