Use for 4 different SSD hard disk length. Suitable for 3cm, 4.2cm, 6cm, 8cm and other length of M2 (NGFF) SSD hard drive. Large capacity filter capacitors, high power LDO Voltage Regulator chip, more steady performance. Please Note: just compatible with Bkey SSD, not for mkey Solid State Drives. Material: PC + Metal Color: Green Size: 100×43mm/3.94×1.69in (Approx.) Quantity: 1 Set (other accessories demo in the picture is not included) Package includes: 1* Adapter Card (No retail package) 1* Screw package Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.