Socket Eye
Use: For assembling anchoring and suspension strings and also for their fixation.
| Reference | Designation | Connection |
| 5.02.R16P/16 | kneecap | GA1/GA2 - GS1/GS2 |
| 5.02.R16P/21 | Large kneecap | GA3/GS3 |
| Reference | Designation | Connection |
| 5.02.R16P/16 | kneecap | GA1/GA2 - GS1/GS2 |
| 5.02.R16P/21 | Large kneecap | GA3/GS3 |