The Rigging Bullet with threads provide an easy way to install mounts in out of reach places where before the only previous options would have been self-threading screws, well nuts, or pop rivets. The three different threads on our rigging bullets are designed to fit whatever mount you prefer to use. Use Rigging bullet #10-32 threads for our GT175 and LeverLoc Anchor Trolley HD. Sold in a pair. Made in the USA Covered by our Built for Life Guarantee SKU:RB1032