The Ronstan Series 55 Orbit Ratchet Fiddle Block is a high-performance sailboat block featuring a swivel head and a becket. Engineered for superior sheet control, this block offers up to 20:1 holding power and is designed to provide smooth easing of sheets during operation.
Key Features:
- Automatic and manual engagement modes allow for flexible setup; auto mode engages under load and releases when load is removed for rapid easing.
- Generation 2 sheave features 12 gripping faces for up to 21:1 holding power.
- Straight-face geometry distributes load evenly while minimizing rope wear.
- Anodized aluminum sheave for durability.
- High-compression strength carbon black Acetal ball bearings.
- Toughened, glass fiber reinforced nylon frame and cheeks.
- Includes a UV-stabilized, multi-strand impregnated SK75 Dyneema rope link.
- Manufacturer part number: RF56510.
- UPC: 9316800480241.
Product facts
- CT SKU
- CT-106474
- Model / MPN
- RF56510
- UPC / GTIN
- 9316800480241
- Package dimensions
- 2" X 3" X 7"
- Package weight
- 0.27 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.
Shipping & returns
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.
Need help choosing?
Need help choosing?
Send us the product link or SKU, plus details about your boat, RV, trailer, vehicle, or project. We will help you narrow down the right option when product fit is not obvious.
