Like the 5 Series blocks, but with Schaefer's ball bearing sheave. Curved ball races allow Schaefer ball bearing blocks to take higher loads than other similarly sized blocks.

• Sheave: UV-protected white Delrin¨
• Ball Bearings: Delrin
• Sheave Size: 2" (51mm)
• Line Dia.: 7/16" max.
• Cheek Material/Finish: Black anodized aluminum or polished stainless cheeks, stainless straps
• Shackle/Strap Type: Swivel with three-way locking

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