The KT121610EGB2 is an IKO needle roller bearing in the Needle Roller Bearings product series. Product information identifies it as a needle roller cage with a carbon cage type internal structure.
The listed bearing type is Needle Roller Bearings, and the internal structure is listed as Carbon Cage Type.
The KT121610EGB2 has an inner diameter of 12 mm, an outer diameter of 16 mm, and a width of 10.0 mm.
The product data lists the bearing material as Carbon Steel. The detailed title also describes the item as a needle roller cage made of high carbon steel and references B2 tolerance of roller diameter.
The supplied data lists a basic dynamic load rating of 5650 N and a basic static load rating of 5890 N, with the bearing material identified as Carbon Steel.