Features: 1.Practical :The utility of this tool is very powerful, more practical, more widely supported, and more thoughtful than the previous head tools listed 2.Support a Lot: Fully consider computer type, hard disk type, number of magnetic heads, number of magnetic heads, berthing area (landing inside landing) and other factors 3.Personalized Design: The unique fixed holes, pins, sockets and other personalized designs not only fully secure the head 4.Good Operation: Good operation "synchronization" and "consistency" of physical head separation 5.Many Functions: Also help guide the head safely and easily in and out of the disk area, maximizing the safe operation and earthquake resistance of the "head" at the same time specification:Item Type: Hard Drive Head Replacement Comb Material: Plastic List of HDDs Supported by the Repair Tool: 101 for Samsung -- -SpinPoint SV4002H / DOM 40G -- One Disk with Two Heads For Samsung -- SpinPoint SP0802N 80G-- Two Disks and Two Heads For Seagate -- 7200.12 ST3500418AS 500G -- One Disk and Two Heads For Seagate -- 7200.11 ST3320613AS 320G -- One Disk and Two Heads For Seagate -- 7200.7 ST380011A 80G -- One Disk with Two Heads For Seagate -- ATA IV ST340016A 40G -- One Disk with Two Heads For Seagate -- U6 ST340810A 40G -- One Disk with Two Heads For WDC -- WD800BB 22DKA0 80G -- One Disk and Two Heads For WDC -- WD800BB 00JHC0 80G-- Two Disks and Two Heads For WDC -- WD800BB 23JHC0 80G -- One Disk and Two Heads For WDC -- WD400EB 00CPF0 40G -- One Disk and Two Heads For WDC -- GENERIC AT 40G -- One Disk with Two Heads PackageList:1 x Hard Drive Head Replacement Comb 2 x Pin 10 xFingertips