Valve adjuster or spanner for Reina flat lockshield valve

[WannabeDIY2]

Hello,

My radiator has a Reina valve with a flat lockshield and no spindle that I can adjust. Would anyone happen to know what tool I can use to adjust it? I'm attaching a photo. Apologies but I'm very new to DIY with radiators so I don't have a clue what I can use.

Thanks,
Karren

 

[Madrab]

Allan key hex .... Buy a set of keys from SF/TS for a few pounds.

 

[ianmcd]

Very standard set up on many modern lockshield valves as bove a few quid at Toolstation or screwfix

 

[WannabeDIY2]

That's great, thank you both for your answers!