Specification:
Quantity: 40 sets of hard drive shock absorbing screws
Colour: Black and metallic
Size: total length: 11mm/0.43inch, cap diameter: 10mm/0.4inch, thread diameter: 3.4mm/0.13inch

Features:
Requires chassis support, some power supplies work, laptops do not.
Only for 3.5 inch HDD, not for 2.5 inch HDD.
Widely used: applied to chassis support, provide good silence and damping effect.

Warm tips:
All data are measured manually, please understand if there is any error!