Ronstan Series 50 SP Single Utility Block (with Nylatron Sheave) - Universal Head Product Number:RF50100HL A paint job will last

A paint job will last longer after an application of Ospho because subsequent paint coating securely attaches itself so that moisture and oxygen normally do not attack the metal

Integrated bleed ball prevents air locks

Xtreme Clean is safe for use on all metal

Seals out moisture and helps prevent corrosion

specifically formulated for use in the interiors of all types of construction

Ronstan Series 50 SP Single Utility Block (with Nylatron Sheave) - Universal Head Product Number:RF50100HL A paint job will lastRonstan 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