420 stainless steel disc rotor built in with center lock type 

AL6061 spider, center lock ring(AL6061 Black color only) provided in the set.

✱Rotor Size: 140/160/180/203mm

✱Spider Color: Black/Red/Gold

✱KCNC Codes:

140mm: KDBD05-001BK/G/R

160mm: KDBD05-002BK/G/R

180mm: KDBD05-003BK/G/R

203mm: KDBD05-004BK/G/R