The Singing Rock Twister swivel connector prevents other system components from twisting. Designed for work at heights and mountain climbing. The body of the swivel is made of durable aluminum alloy. Main features: - intended for work at heights and mountain climbing - durable aluminum alloy body - colour-separated connection holes with a diameter of 18 mm - inside the swivel there is a ball bearing that allows rotation up to a load of 4 kN - each piece marked with a unique production number - strength 22 kN