This BB is used for many different frame types that have a 41mm Diameter :

IMG_9389
SPECIFICATIONS

Unique steel design in which the bearing outer race is also the outer press fit surface
30mm Drive bearing / 28mm NonDrive bearing
This BB is used for many different frame setups.  See compatibility section.


INSTRUCTION MANUAL

Square M30 Hand
COMPATIBILITY

FRAME TYPE : This BB is used for many different frame types that have a 41mm Diameter :

BB86 (86.5mm Width) ROAD & BMX
BB90 (89.5mm Width) MTN
BB92 (92mm Width)  MTN
BB104.5mm Width   DH MTN
BB107mm Width  DH MTN
TOOL : This specific M30 bottom bracket is a press fit and uses a press tool/drift for installation, and a cup-removal tool for removal.  These are very specific tools so talk to your local bike shop if you do not own them.  See Instruction link above.