16mm

Design for most Adjustable lock for the seat of the fitness exercise bike. Material:alloy 6061. Quick knob design. easy to use and install. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.

Material:alloy 6061. design for most Adjustable lock for the seat of the fitness exercise bike. easy to use and install. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.

Design for most Adjustable lock for the seat of the fitness exercise bike. Material:alloy 6061. Quick knob design. easy to use and install.