One kit is good for 2 mountain bike wheels

#2 Phillips / Flat head

The sole also contains a removable panel

The Polartec Neck Gaiter regulates heat to keep your neck warm on those chilly rides

Recharge/discharge number of times： about 300 times（until the rated capacity drops to 70%）

SRAM X-SYNC 2 SL 12 Speed Direct Mount Chainring - Direct Mount - SRAM Direct Mount - 3mm Boost - Round - 32T - 11-12 Speed - Black - Alloy PLP|Riding Style One kit is good forThe radical new look and feel of the X SYNC 2 chainring is a direct result of SRAM drivetrain engineers studying the performance and wear characteristics of thousands of X SYNC chainrings. The aggressive tooth design provides better chain retention for a smoother, more efficient pedal feel. With a focus on long wear life, the X SYNC 2 design reduces friction and the accumulation of mud, grit and grime. Features: Compatible with 11 and 12 speed