SK1D_M4RK t1_j1vdayi wrote

It might even pop out with tweezers. Might need a tiny slot head mechanical screw driver to pry it out. It may be rubber and fit back in afterwards. Underneath may need an allen key or the same slotted screw driver. Watch over tightening to prevent the screw from scoring what it grasps onto, if the handle is difficult to turn you may need to buy a new cartridge for your faucet.