Ronstan Series 40 Orbit BB Double Block with Swivel and Shackle Marine It's extra tough for use

It's extra tough for use on hard tops

Simple and Secure Attachment

These reliable and affordable Low-friction Carbo Air blocks are compact and lightweight

hours/minutes/seconds - 12 or 24hr format

better withstand the elements and to minimize traditional connector-borne signal loss

Ronstan Series 40 Orbit BB Double Block with Swivel and Shackle Marine It's extra tough for useSeries 40 Orbit BB Double Block with Swivel & Shackle The Series 40 ball bearing Orbit Blocks provides the perfect balance of strength, performance, and reliability. They offer class leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fiber reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks the perfect balance of performance and