T4 Torx: Most Hitachi laptop drivesT5 Torx: WD laptop drives 7mm/15mmT6 Torx 1: Some Seagate desktop drives and some WD laptop drivesT6 Torx 2: Some Seagate, Hitachi desktop drives and some WD laptop drivesT8 Torx: WD, Hitachi, Samsung, Toshiba desktop drivesCross screwdriver: Many laptop drives for Seagate, Samsung and .

Seagate Helium HDD Head Replacement Tools: STH82 for Seagate 12TB helium drives, ST12000NM0007ST5E for Seagate 8TB helium drives ST8000NM000ASTH81 for Seagate 10TB helium drives, ST10000NM0478, 8 platters, 16 headsSTH9 for Seagate 14TB 16TB helium drives, 9 platters, 18 heads Seagate 2.5″ HDD head replacement tools:ST2-3 for ST2000LM005, Seagate Samsung .

The following are the head replacement tools for Western Digital hard drives and they are very easy to use and very cost effective. W38: WD120EDAZ, 8 platters, helium drivesW3-9: WD helium hdd of 10T-16T, 9 platters or similar physical head structure;W6S: 6 platters, WUS721010ALE6L4Western Digital Head Comb for WD .