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Description
Ronstan Series 40 Swivel Head All Purpose Double Block w/ BecketProduct Description Ronstan Series 40 Swivel Head All Purpose Double Block w Becket Features: Exceptionally high working loads Low maintenance, long service life Self lubricating sheave Slotted pin shackle eliminates fouled lines Two way head post Snap fit removable becket pin Spare parts RF41010 Replacement Becket Pin, RF150 shackle Specifications: Sheave 1 9 16 in. (40mm) Max. Rope 7 16 in. (10mm) Pin 3 16 in. (5mm) M. W. L. 1320 lb. (600 kg) B. L.
Product Description
Ronstan Series 40 Swivel Head All Purpose Double Block w/ Becket
Features:
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating sheave
Slotted pin shackle eliminates fouled lines
Two way head post
Snap fit removable becket pin
Spare parts - RF41010 Replacement Becket Pin, RF150 shackle
Specifications:
Sheave Ø - 1 9/16 in. (40mm)
Max. Rope Ø - 7/16 in. (10mm)
Pin Ø - 3/16 in. (5mm)
M.W.L. - 1320 lb. (600 kg)
B. L. - 2650 lb. (1200 kg)
Weight - 5 oz. (143 g)
Product Information:
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.Becket pin is removable so line can be spliced prior to fitting and is ingeniously locked into position without the use of a clevis pin, split ring or tools.
Applications:
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)
Materials:
U.V. stabilized Acetal sheaves
Impact and U.V. resistant, fibre reinforced Nylon cheeks
Grade 316 stainless steel bearing race
Grade 316 stainless steel load strap and head fitting
Sheaves: UV stabilized acetal
Cheeks: Impact modified, fiber reinforced and UV stabilized nylon
Features:
Specifications:
Product Information:
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.Becket pin is removable so line can be spliced prior to fitting and is ingeniously locked into position without the use of a clevis pin, split ring or tools.
Applications:
Materials:
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 4
Good pillow, not the best overall but it's good value for what you pay.
Size: 20 in x 54 in, Style: 1 Pack
Can be slightly uncomfortable at first, but it goes away quickly, very soft and doesn't hold shape very well, but pillowcases fit well on it, it's pretty quality, and it's durable. There's not much more you can ask for in a pillow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
★★★★★ 5
Durable and comfortable
Size: 18 x 18 inches, Style: 4 Pack
These pair perfectly with standard 18x18 pillow covers. Fluffy and durable great addition to your decor with the ease of inserting into any pillow cover. Very cost effective and keep their shape!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
★★★★★ 5
Love being able to change with the seasons!
Size: 20 x 20 inches, Style: 4 Pack
I’ve been using the Amazon Basics Square Hypoallergenic Pillow Inserts with my seasonal pillow covers, and I absolutely love them. I like to switch out my covers each month or holiday, and these inserts make it so easy to keep my living room looking fresh and festive year-round.
They hold their shape really well and give my pillows a full, plush look without feeling too stiff. I also appreciate that they’re hypoallergenic, which is a big plus for my home.
Overall, these inserts are a great staple to have if you enjoy decorating with interchangeable covers. They’re comfortable, reliable, and perfect for keeping up with seasonal décor changes. Highly recommend!
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Reviewed in the United States on April 8, 2026
★★★★★ 3
If you like your pillows plump, these won't do it.
Size: 20 x 20 inches, Style: 4 Pack
Disappointed in this item. they do not have enough filling in them and what is there flattens out very quickly. Will not purchase this brand again.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Perfect inserts for a great price
Size: 20 x 20 inches, Style: 4 Pack, Size: 20 x 20 inches, Style: 4 Pack
Great inserts! (The cat’s judgement is of me, not the inserts)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
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