PAIR Cisco UCSB-HS-EP-M4-F & -R Front & Rear Heatsinks for B200 B420 M3 M4 Blades.
PID: UCSB-HS-EP-M4-F, UCSB-HS-EP-M4-R
PN: 700-42565-01, 700-42566-01
Clean pull. Great conditions.