Ronstan Series 50 All Purpose Block - Double MELVHFA3 One-Piece Molded Sight Glass Eliminates

One-Piece Molded Sight Glass Eliminates Tie Rods and Gaskets

The 70mm sheave Size 7 high load cruising block range is engineered for superior strength and performance and offers both plain and ball-bearing sheave assemblies

Manufacturer Part Number 7311-BSS Key Features

Fits Mercury and Mariner 4-cylinder 65hp through V6 outboards with short-vane impellers

(2) 1/4"-20 x 2

Ronstan Series 50 All Purpose Block - Double MELVHFA3 One-Piece Molded Sight Glass EliminatesSeries 50 All Purpose Block Double All purpose (AP) blocks are a great all around solution. Self lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Swivel shackle head for full 360 degree rotation (non locking).