Shimano Deore CS-M6200 12-Speed Cassette Sprocket Microspline - Silver Variant:10-51T You don't need any tools

You don't need any tools to attach it to the handlebars

The tool works with 9 to 12-speed quick-links and chains

it can reduce the deformation under heavy load

Scene Two: Set a heart rate threshold < 120BPM

Shimano Deore CS-M6200 12-Speed Cassette Sprocket Microspline - Silver Variant:10-51T You don't need any toolsDeore M6200 Cassette The Deore M6200 12 speed cassette delivers a 510% gear range across a 1051t spread, balancing weight reduction with the shifting performance and strength Shimano is known for, all at an affordable price point. FEATURE Micro Spline: Compatible with all MS Freehub bodies Optimized Construction: Lighter than the previous model, achieved through strategic material reduction Durable: Steel cogs ramp up durability and strength PRODUCT