Series 30 Ball Bearing Orbit Block by ROnstan. Suitable for rope up to 8mm. 

• Lightweight
• Highest working load in its class
• Secure, versatile and secure attachement
• Low profile and compact
• RF35101 accepts RF1850S shackle in both orientations to create a conventional loop top block.
• Ultra low profile thru-sheave becket
• Part# RF35101