Shimano Deore XT/Ultegra CN-M8100 12-Speed - HYPERGLIDE Siltec MTB/Road Bike Chain Category_Cleats 9mm Weight： 32g (with batteries)

9mm Weight： 32g (with batteries) Light source： COB LED Battery： Lithium Polymer rechargeable battery Runtime： Low mode： 5 hrs

Included in delivery: 3 brushes: 1xZB Wash

Shimano HG31

Not to mention integrated MIPS

Shimano Deore XT/Ultegra CN-M8100 12-Speed - HYPERGLIDE Siltec MTB/Road Bike Chain Category_Cleats 9mm Weight： 32g (with batteries)SHIMANO DEORE XT 12 Speed MTB Chain CN M8100 SHIMANO DEORE XT 12 Speed HYPERGLIDE+ SIL TEC MTB Chain The M8100 chain provides enhanced chain retention thanks to an extended portion of the inner plate. The new chain features quick link assembly and SIL TEC treatment for extended offroad durability. FEATURES Proprietary design ensures smooth shifts and strength Extended inner plate improves chain engagement and retention DYNAMIC CHAIN ENGAGEMENT+