1The hanging points are 3 round holes， this design let the force more uniform and using more smooth when pulley is hanging. 2Compatible with wide range of ropes up to 14mm/0.5 inch，for complex saving/hauling system setup. 3The double bearing design allows the pulley to slide steady and smoothly， having great effect during using. 4The climber pulley can effective support the high speed rotation， reduce the friction coefficient during the movement. 5The anodized coloring process makes the stronger oxidation resistance of the pulley， more durable， light weight and not easy to corrode.Item Type: 3 Hole Side Plate PulleyMaterial: Aviation AluminumColor: BlackWeight: 165g/5.8ozProduct Size: Approx.94x67mm/3.7x2.6inHole Diameter: Approx.16mm/0.62inApplication: for Mountaineering， Downhill， Expansion， Caving， Rock Climbing， Rescue， Aerial Work， etcStatic Tension: 30KNSliding Tension: 6KNRope: 14mm/0.55in1 x 3 Holes PulleyPlease note that the new type and old type of this product will be sent randomly， and make sure you will not mind before ordering.