Description
Ronstan Series 40 All Purpose Block – Single – Stand Up – Marine Boat Replacement Part is organized for deck hardware & rigging shoppers who need a clear, professional marine parts buying experience.
Series 40 All Purpose Block – Single – Stand Up 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. Captive Lock universal head can be fixed in either of two planes, or free to swivel as required. Features: Exceptionally high working loads Low maintenance, long service life Self-lubricating sheave Captive Lock universal head Mount with 2 x 5mm (3/16″) fasteners (not supplied) Applications: Mains
Fitment & Product Details
- Brand / Manufacturer: Ronstan
- Position: right
- Material: stainless steel
- Search-optimized by brand, system, part type, and fitment cues.
- Verify compatibility with your original part number, engine model, and application before ordering.
- Built for boat owners, e-commerce shoppers, and professional marine service teams.






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