Select from copper or aluminum 40x40mm high quality water blocks with either a "Top Port" or "Regular Port" configuration. 

The Regular port model has two flat 40x40mm sides, both of which are polished (lapped) quite well.

The Top Port model has both barbs located on one side, so that side is not polished.

These blocks pair well with our 1/4 x 3/8 (click to see) silicone tubing, sold by the foot.

Dimensions

40x40 copper top port: 40 x 40 x 9.1 mm thick
40x40 copper regular port: 40 x 40 x 9.5 mm thick

40x40 aluminum top port: 40 x 40 x 11.9 mm thick
40x40 aluminum regular port: 40 x 40 x 11.9 mm thick

Weights:

40x40 copper top port: 111 grams
40x40 copper regular port: 104 grams

40x40 aluminum top port: 39 grams
40x40 aluminum regular port: 39 grams

Barb Sizes:

40x40 copper blocks: 4.5mm ID, 7mm pipe OD, 8.5mm barb sidest point OD

40x40 aluminum blocks: 6.2mm ID, 8.2mm pipe OD, 9.5mm barb sidest point OD