Check the listing for details. RocRide Narrow Wide Chainring 104 BCD for 9/10/11 Speed with 4 Bolts 32T 30T. Color: BLACK, RED, BLUE, Condition: New. Listed at 14.97 USD. RocRide ChainringsRocRide 7075 T6 Aluminum Chainring with Narrow Wide Tooth Profile for Superior Chain Retention. Available with 104BCD 4 Hole Pattern in 32T and 30T. Mounting Bolts are Available in Durable Steel or Lightweight Aluminum.RocRide Narrow Wide 32T and 30T 104BCD Chainrings are Available in Black with Aluminum or Steel Bolts32T BLACK CHAINRING WITH BLACK ALUMINUM BOLTS32T BLACK CHAINRING WITH STEEL BOLTS30T BLACK CHAINRING WITH BLACK ALUMINUM BOLTS30T Chainring mounting holes are threaded and only require the male bolt without the nut.30T BLACK CHAINRING WITH STEEL BOLTS30T Chainring mounting holes are threaded and only require the male bolt without the nut.RocRide Narrow Wide 32T and 30T 104BCD Chainrings are Available in Red with Aluminum or Steel Bolts32T RED CHAINRING WITH RED ALUMINUM BOLTS32T RED CHAINRING WITH STEEL BOLTS30T RED CHAINRING WITH RED ALUMINUM BOLTS30T Chainring mounting holes are threaded and only require the male bolt without the nut.30T RED CHAINRING WITH STEEL BOLTS30T Chainring mounting holes are threaded and only require the male bolt without the nut.RocRide Narrow Wide 32T and 30T 104BCD Chainrings are Available in Blue with Aluminum or Steel Bolts32T BLUE CHAINRING WITH BLUE ALUMINUM BOLTS32T BLUE CHAINRING WITH STEEL BOLTS30T BLUE CHAINRING WITH BLUE ALUMINUM BOLTS30T Chainring mounting holes are threaded and only require the male bolt without the nut.30T BLUE CHAINRING WITH STEEL BOLTS30T Chainring mounting holes are threaded and only require the male bolt without the nut.Mounting Bolts are Available in Durable Steel or Lightweight AluminumSteel Bolts for 32T Chainrings16.2 grams per set.Aluminum Bolts for 32T Chainrings6.6 grams per set. Available in Black, Red and Blue.Steel Bolts for 30T Chainrings11.2 grams per set.30T Chainring mounting holes are threaded and only require the male bolt without the nut.Aluminum Bolts for 30T Chainrings3.9 grams per set. Available in Black, Red and Blue.30T Chainring mounting holes are threaded and only require the male bolt without the nut.NARROW WIDE TOOTH PROFILENarrow Wide Chainring Design Provides Superior Chain Retention, Wear, Noise and Friction Reduction Compared to Standard Designs.STRONG, LIGHTWEIGHT CONSTRUCTIONAerospace Strength Anodized 7075-T6 Aluminum and 4mm Plate Thickness Prevents Flexing and Allows for A Smooth Transfer of Power.A VARIETY OF COLORS TO MATCH YOUR STYLERocRide Chainrings are Available in a Variety of Colors to Match Your Bike Trim and Your Style.