Ronstan Series 60 Single Stand-Uip Swivel Block Johnson Marine or comfort

or comfort

Prevents clogged filters that shut down engines

fiberglass fabric

bulb replacements for 2NM nav lights

Thickness:  1/2"

Ronstan Series 60 Single Stand-Uip Swivel Block Johnson Marine or comfortCore Blocks are a true all round solution. A tuned 2 stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for