Not sure what they are called but they also use them for tapping threads, using a different attachment.

Usually, the equipment would be used inside the rack with both front and rear lids removed which allows for airflow around the equipment. If the equipment needs to be used with both the lids attached to the rack body we would recommend fitting either 240w AC or 24v DC axial fans in the front and rear lids of the rack to allow air to pass through the case. For more information why not call our friendly team and we will be able to find you a solution - +44 (0) 20 8568 1881 or visit our website to learn more about our ERack range - cpcases.com/products/19-racks/erack-3-2/

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