I mistakenly ordered these SLX Rotors but shipping them back to the UK where I got them from is pretty costly. See below, these are brand new, never installed. Comes with the Shimano lock ring as pictured.
$20 shipped each
Shimano SLX-Deore RT64 Centre Lock Disc Rotor
Precision cut stainless steel braking surface improves pad clearing in muddy conditions while aiding cooling underhigh load
Rotor contact surface has been developed for excellent pad clearing and cooling which increases pad performance and life
Alloy spider supports rotor surface, increasing rigidity and reducing weight
Comes complete with steel lockring
Weight: 153g (160mm)
https://farm6.staticflickr.com/5819/22317795712_64528a9cb7_n.jpg