Ronstan Series 50 SP Single Utility Block (with Nylatron Sheave) - Universal Head Navigation Chart and will allow under water

and will allow under water viewing as far as water clarity and light permits

For more specific application guidance

Air Daddy is a universal adapter tapered to fit all valves found on inflatables

pool floats are manufactured from heavy gauge RF-welded PVC to ensure long service

If wood is dirty and/or stained

Ronstan Series 50 SP Single Utility Block (with Nylatron Sheave) - Universal Head Navigation Chart and will allow under waterRonstan Series 50 Special Purpose Single Utility Block (with Nylatron Sheave), Universal Head RF50100HL Exceptionally high working loads Lightweight Cheek cut outs for easy bearing maintenance Suitable for both rope or wire Captive Lock universal head Slotted pin shackle eliminates fouled lines Applications Mainsheet Spinnaker sheets Halyards and other primary applications on boats up to 10 m (33 ft) Materials Nylatron sheave Grade 316 stainless steel