JET JMD-45VSPFT Variable Speed Geared Head Square Column Mill Drill with Power Downfeed & Newall DP500 Profile Knives & Limiters What does the checkered head

What does the checkered head pattern on these nails actually do

What material and finish is the CC44 made from

providing enough coverage for a substantial decking project when used alongside the corresponding DCU Composite screws

Materials: Fiber Cement

JET JMD-45VSPFT Variable Speed Geared Head Square Column Mill Drill with Power Downfeed & Newall DP500 Profile Knives & Limiters What does the checkered headJET JMD 45VSPFT Variable Speed Geared Head Square Column Mill Drill with Power Downfeed & Newall DP500 2 Axis DRO by JET is a heavy duty, CSA CUS Certified milling and drilling machine engineered to maximize production in high intensity environments. Combining a variable speed geared head, power downfeed with tapping capability, and a precision Newall DP500 2 Axis Digital Readout, this mill drill delivers the rigidity and accuracy required for a wide