Shimano J04C MF Disc Brake Pads Springs Metal Compound Finned Alloy Stainless Steel Back Plate One Pair Cassette Cogs 12 14 16 18 21 26 32 Oversized Grade 3 balls roll Oversized Grade 3 balls roll on races which are ground to a mirror finish after receiving Magnetite and then Cryogenic treatments for hardness and longevity and slippery Silicone seals to produce minimum resistance Color Black Ring Position Type Single Tooth Count 44 Round or Oval Round Drivetrain Speeds Single Speed 3 32" Chainring BCD Direct Mount SRAM Material Aluminum Defined Color Black Direct Mount Type Direct Mount SRAM table{border collapse:collapse desc ul{font size:24px