Ronstan Series 19 Utility Block - Single - Ferrule Eye Head - RF663

Ronstan Series 19 Utility Block - Single - Ferrule Eye Head - RF663

Marsoni

M251S

$18.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Ronstan Series 19 Utility Block - Single - Ferrule Eye Head - RF663Series 19 Utility Block Single Ferrule Eye Head Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase. Features: Lightweight durable construction Economical Maintenance free Applications: Vang, cunningham and trapeze retriever systems on dinghies Leech line tackles, bunk adjusters, etc on

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We offer a 30-day return/exchange service after receiving.
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Bought replacement parts from another vendor, but the brushes are nylon and do not last. Filters did not fit 11S, so I had to throw them away. Parts from this current kit fit perfect, brushes are rubber and seem more sturdy. Have not had to change them yet, but there were 10 replacement brushes in the kit, as the other kit only provided 4. Changed the filter also, picks up a lot more dust and dirt.

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Reviewed in the United States on September 12, 2023

Verified Purchase

Suellen

Natrona Heights, US

★★★★★ 5

Yes

Size: 23 Pack

Replacement part just like original

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Reviewed in the United States on April 30, 2026

Verified Purchase

Jeremy

Carnegie, US

★★★★★ 5

Vacuum

Size: 23 Pack

Great products

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Reviewed in the United States on March 25, 2026

Verified Purchase

G Smitman

Bozeman, US

★★★★★ 4

Check Filter size

Size: 23 Pack, Size: 23 Pack

Super close!!! Image shows what is in the package. Look closely at the filters if you have an 11S. In my photo, their parts are on the left and my pieces are on the right. The brushes and roller and retainer fit. The filters don’t fit. Model 2126

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Reviewed in the United States on February 15, 2026

Verified Purchase

James Pease

Belleville, US

★★★★★ 5

Works just like original parts

Size: 26 Pack

Bought for my euify robot vacuum. The replacement parts fit perfectly. They are exactly like the original one parts. They are long lasting. I have dogs and they get used every day.

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Reviewed in the United States on August 25, 2025