Rim well compatibility:

Oh and they come in a female specific fit

3mm (L) x 26

Suitable for tubes between 24 - 32mm

3rd Layer:

Magicshine MJ-6112 2600Mah Battery Pack PDP|PLP|Rail Material Rim well compatibility:Magicshine's MJ 6112 battery pack is a 2600mAh 7. 2V replacement rechargeable battery pack for your Magicshine MJ 900, 900S and 900B bike lights. The clever thing is, that it's also a portable power source that provides you with a USB outlet for recharging your phone or GPS device while out on the trail. You can recharge the MJ 6112 using any typical USB AC wall charger and the included cable via the Micro USB input. If you just want to take the