To celebrate reaching the 10,000 member milestone on their fancafe, the members of HALO courageously stood on top of a bungee jump tower to keep their promise to fans.�

OOON�stated in the video, "Lets not think of this as a pledge for 10,000 members, but as us keeping our promise to our fans. And we're going to continue reaching up to 20,000~30,000 members!"�

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In addition to thanking their fans for the support and love, the boys of HALO overcame their fears and jumped off the 45m (approximately 150 ft) high bungee jumping tower.�

Meanwhile, Yoondong and OOON opted out due to their health issues, but promised that they would fulfill the promise on a later date.

Check out the video above!

Tip: SixHalo