These are OEM Shimano Parts, Brand new, Never Installed on Bike, Never used in any way, just NOT in the retail packaging.
Original Shimano RT66 6 bolts Rotor
Description:
Rotor Size: 160mm/180mm/203mm
Series:SHIMANO SLX M7000 Series
Mounting: 6 Bolt
For Bike Type: Mountain Bike
for pads: Metal, Resin
Condition: Brand New without Packing Box
Rotor Material: Stainless Steel
Unique 2-piece rotor construction
Lighter weight, stiffer, and stays cooler than one-piece rotors
6-bolt attachment is compatible with many wheel options