1. Practical: This tool is highly versatile, more practical, more widely supported, and more thoughtfully designed than previous tools. 2. Widely Supported: Fully considers computer type, hard drive type, number of magnetic heads, and docking area (landing inside landing) among other factors. 3. Personalized Design: Unique fixed holes, pins, and sockets ensure complete head security. 4. Excellent Function: Provides excellent "synchronization" and "consistency" of physical head separation. 5. Multifunctional: Safely and easily guides the head in and out of the disk area, maximizing safe operation and earthquake resistance for the "head". Item Type: Hard Drive Head Replacement Comb Material: Plastic Supported Hard Drives: Samsung -- SpinPoint SV4002H / DOM 40G -- One disk, two heads Samsung -- SpinPoint SP0802N 80G -- Two disks, two heads Seagate -- 7200.12 ST3500418AS 500G -- One disk, two heads Seagate -- 7200.11 ST3320613AS 320G -- One disk, two heads Seagate -- 7200.7 ST380011A 80G -- One disk, two heads Seagate -- ATA IV ST340016A 40G -- One disk, two heads Seagate -- U6 ST340810A 40G -- One disk, two heads WDC -- WD800BB － 22DKA0 80G -- One disk, two heads WDC -- WD800BB － 00JHC0 80G -- Two disks, two heads WDC -- WD800BB － 23JHC0 80G -- One disk, two heads WDC -- WD400EB － 00CPF0 40G -- One disk, two heads WDC -- GENERIC AT 40G -- One disk, two heads Package Includes: 1 x Hard Drive Head Replacement Comb 2 x Pins 10 x Fingertips