The chainrings feature Shimano's SG-X design! This includes spike pins for better grabbing of the chain and leading teeth profiles for smoother shifting.
Hollowtech II -- Bottom Bracket not included
Material: Aluminum
BCD: 130mm / 74 mm
Approximate Weight: 845g
Color: Silver
Made in Japan
New Old-Stock Shimano 105 Crankset in original box. May have some
minor evidence of shelf-wear from storage, though there appears to be
none of note. Overall the Crankset parts are in excellent NOS condition!