Box Two Oversized 30mm Alloy External Bottom Bracket Color:Red It does come with a

It does come with a valve plug if you do choose to go tubeless

4mm diameter / 135mm length

Comfort mesh liner ventilated mesh liner helps keep you comfortable and cool

36 Hole with 9T driver

15oz (pair)

Box Two Oversized 30mm Alloy External Bottom Bracket Color:Red It does come with aThe Box Two Oversized Alloy External Bottom Bracket follows on Box's Oversized Technology engineering philosophy. Material is moved from low stress to high stress areas creating a bottom bracket with less deflection and more quickly applied pedal power. For this bottom bracket Box has toned down the Oversized Technology a little bit in relation to their top of the line M35 model. The 30mm cross section is designed to work with the other M30 components