Aluminum cover dissipates heat more instantly than other HDD waterblock with acrylic cover For 5.25” drive bay : The HDD waterblock can fit into 5.25" drive bay in the chassis Excellent heat dissipation through copper tubes and copper base Support all 3.5 inch disk driver Can be applied to ID 6.4mm (1/4") and 9.5mm (3/8") liquid cooling systems HDDs mount quickly and easily onto the cooler Provides the most stable system possible while silent Model CL-W0082/HDD Waterblock Installation Fit into 5.25” driver bay Cover material All aluminum designed Base and tube material All copper designed Dimension of Copper base 105mm(W) x 85mm(D) x2 mm (H) Dimension of main body 145mm(W)x146mm(D) x 41.5mm(H) Inner diameter for included tubing ID 6.4mm (1/4") and ID 9.5mm (3/8") Inner diameter for included quick install connectors ID 6.4mm (1/4") and ID 9.5mm (3/8") Applications All 3.5 inch HDD