Split band seatclamp with a stainless steel 4mm hex bolt and brass retaining nut.
Built in red backup light powered with an included CR1632 lithium cell battery.
For best results secure with a torque wrench to 5nm of clamping force.
31.8mm to fit - Gold, Gold Disc, Terra Gravel, Terra C and Terra Via
34.9mm to fit - Oxygen, Aira, Yara, Pyro, Pyro Disc, Pyro Evo