Notch 5-8" Rigging Block w/ 3/4" 2-8' Loopie is a medium sized lightweight arborist block that accepts working lines up to 5/8” (16mm) diameter. Made with 12 strand 3/4" Samson Tenex Tec rope. Hot forged aluminum side plates with rope friendly rounded cheeks. Precision CNC machined aluminum sheaves with wide bend radii. Stainless steel axle. Low profile, secure, easy to-open captive screw pin lock. High wall, full diameter, improved anchor sling protection. Wide, concave upper sheave with a 3/4” anchor sling. Flared side-plates reduce twisting in complex rigging scenarios. Upper sheave diameter: 1.95 in. (50mm), lower sheave diameter: 2.4 in. (61mm). Working Load Limit: 25 kN (5,620 lbs.), MBS: 125 kN (28,100 lbs.)