You will either crimp or pinch these. None are positive. They will yield 5.10+ on vertical and impossible to grab in steep terrain. They also make for awesome feet.
3/8-16 Zinc Round Base T-nuts
The best selling Down Climb hold from our line.
Several different angles of sloping edges.
Lots of 3/4" to 1" foot holds.
3/8-16 x 1" Indoor rated allen head bolt