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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
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Description
Ronstan 100mm Mast Base Core BlockProduct Description Ronstan 100mm Mast Base Core Block Features: High dynamic and static load capacity High load bearing system Ball bearings to counteract side thrust loads Class leading performance and sleek, contemporary styling Durable aluminium alloy cheek plates Central hub hole can be used as a becket take off or tie up point Also available in Series 45, 60 & 75 22mm (7 8") inside cheeks at head Mount with 2 x 12mm (7 16") fasteners (not
Product Description
Ronstan 100mm Mast Base Core Block
Features:
High dynamic and static load capacity
High load bearing system
Ball bearings to counteract side thrust loads
Class leading performance and sleek, contemporary styling
Durable aluminium alloy cheek plates
Central hub hole can be used as a becket take-off or tie-up point
Also available in Series 45, 60 & 75
22mm (7/8") inside cheeks at head
Mount with 2 x 12mm (7/16") fasteners (not supplied)
Full block rated load can only be achieved with uniformly distributed load across full length of clevis pin. ie. 22mm (7/8") diameter mast collar post or 22mm (7/8") wide mast collar plate/tang
Specifications:
Sheave Ø - 4 in. (100mm)
Max. Rope Ø - 3/4 in. (18mm)
Max. Cable Ø - in (mm)
Pin Ø - 1/2 in. (12mm)
M.W.L. - 7150*1 lb. (3250*1 kg)
B. L. - 16500*1 lb. (7500*1 kg)
Weight - 21.7 oz. (614 g)
Applications:
Ideal for mainsheet, spinnaker sheet, vang, halyard and backstay applications on boats to 16m (53ft).
General applications on larger yachts.
Materials:
Bearings: High compression strength, self-lubricating acetal
Head post: Grade 2205 stainless steel
Shackles: Grade 17-4PH stainless steel
Padeye: Grade 15-5PH stainless steel
Other fixtures: Grade 316 stainless steel
Features:
Specifications:
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
4.0 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Safe, Affordable, Palatable, and Non-GMO Fast-Dissolve Melatonin
I was very happy and satisfied with this 5mg fast dissolve melatonin product. It is safe and effective-I fall asleep within 20-30 minutes after taking it. After trying different dosages and types of melatonin over the years, the 5mg fast dissolve melatonin is what works best for me. I wake up feeling alert, refreshed, energetic and attentive without any grogginess or "hangover" effect.
The tablets' taste and texture are very palatable and tolerable, and the tablets dissolve thoroughly and quickly. The bottle is easy to open and close but is not child-safe.
I also chose this product because it is GMO-free and made in the USA, both of which are important to for any supplement products that I consume. It is also free of the major allergens and is a vegetarian formula.
This product is a great value in terms of price as well (200 tablets for less than $10). This bottle will last me almost 2/3 of the year.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
★★★★★ 5
This Melatonin works really well for me!
This Melatonin works really well for me and taste good. Helps me get to sleep and stay a sleep. I would recommend this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
★★★★★ 4
Good item
Work well good price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Piping Rock 5 Mg Melatonin
I really liked these 5 mg fast dissolving melatonin. I take one at bedtime and they help me fall asleep fast! They taste really good too. They’re easy to take and dissolve quickly. I also like the quantity for your buck!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 5
Great product. Recommended
Works really good. It's a great price. I checked the ingredients and it is like another brand. The tablets are smaller but taste good. I fall asleep fast
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
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