Save time cleaning metal chips from your milling machine table! This Milling Table Slot Cover Set helps maintain the flow of cooling fluid for greater performance. Precision extruded aluminum covers install and remove quickly without additional hardware, and the anodized finish gives them long life. Each set includes 6 covers, size indicates width oftable slot - this 18mm set fits large Milling Machineswith 18mm slots. 17 1/2" long.