The screw on version of what was seen on American Ninja Warrior's Ultimate Cliffhanger Rail. When a huge laches is the move, going to this positive version is the appropriate choice. It offers the maximum grab in a rail.
3/8-16 Zinc Round Base T-nuts
You supply the base plate, we supply the peg.
Are you an Atomik Ninja Warrior?
Grip strength training devices for Ninja Warrior, parkour, gymnastic, and climbing athletes.
Can't beat the price!