Brand: Ronstan
Ronstan Series 40 Ball Bearing Single Upright Lead Block (RF40171)
Ronstan Series 40 Ball Bearing Single Upright Lead Block (RF40171)
4 available
This Ronstan Series 40 ball bearing block features a single upright lead design, providing a low-profile solution for routing halyards and other sail control lines to cleats or jammers. It is built for reliable performance at the mast base using a 2-stage ball bearing system that ensures consistent operation across varying load ranges.
Key Features:
- Design: Low-profile single upright lead block.
- Construction: Grade 316 stainless steel load housing for durability.
- Performance: Precision-molded, UV-stabilized Acetal sheaves.
- Bearing System: 2-stage system featuring Acetal and Torlon ball bearings for low-friction operation.
- Application: Ideal for halyards at the mast base.
- Model Number: RF40171
Product facts
- CT SKU
- CT-106467
- Model / MPN
- RF40171
- UPC / GTIN
- 9316800244249
- Package dimensions
- 1" X 3" X 5"
- Package weight
- 0.14 lb
Fit-sensitive item: confirm measurements, model numbers, and manufacturer details before ordering. Tug & Tow does not guarantee universal compatibility from a product page alone.
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Shipping & returns
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Fit & compatibility
Fit & compatibility
Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.
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