Hope Mono M4/E4 brake pads
These Hope Mono M4/E4 Brake Pads are genuine Hope brake pads which come with all the required springs and clips. These should work with M4/E4 brakes from 2013 onwards, but it's worth checking that they will take HBSP323S/HBSP323R pads.
The two pad material options are Standard (Organic/Resin) or Sintered (Metallic). Standard Organic/Resin pads tend to have better modulation and less noise whereas Sintered pads tend to have more power, consistency and durability.