[APPLICATION] Fits for AMP CPU. Used for over 90% radiator and cooling block. [MATERIAL] Made of stainless steel material, sturdy and durable. [BUCKLE SIZE] Length: 115mm/4.5inch; Mounting Hole Distance (Approx.): 60-112mm/2.36-4.41inch. [SCREW & NUTS SIZE] Screw Size: M4 x 42mm (Thread SizeLength); Round Nut Size: M4 x 4mm (Thread SizeThickness); Hex Nut Size: M4 x 2.7mm (Thread Size*Thickness). [PACKAGE CONTENT] 1 x Layering Buckle; 2 x Screws; 2 x Round Nuts; 2 x Hex Nuts; 2 x Spring; 4 x O Ring.