# Optiparts Opti Mainsheet 40-29mm Block w/ Shackle

**Manufacturer:** OPTIPARTS  
**MPN:** `EX1321`

The Optiparts Optimist 25mm Low Friction Ring for Sprit Halyard is a lightweight alternative to a block with no moving parts, making it an extremely low maintenance item. It features a hard anodized surface with a PTFE coating to provide a smooth, wear-resistant surface.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | OPTIPARTS |
| Manufacturer name | OPTIPARTS |
| Manufacturer | OPTIPARTS, Optiparts |
| KnownMan | Optiparts Opti Mainsheet 40-29mm Block w/ Shackle |
| Extra Product Name | Optiparts Opti Mainsheet 40-29mm Block w/ Shackle |
| moq | 1 |
| MPN | EX1321 |
| multiple | 1 |
| qtyInStock | -2 |
| qtySource | FieldMap |
| SKU | HEX1321 |
| snippet | EX1321 The Harken 40-29mm link block is the perfect solution for creating a 4:1 Optimist mainsheet. Now available with Dyneema spliced on shackle. |
| tierMinQty1 | 1 |
| tierPrice1 | 72.00 |
| AdultProduct | False |
| Asin | B073Q1RHNG |
| Autographed | False |
| Brand | Optiparts |
| ClassificationId | 3399171 |
| DisplayName | Hardware |
| Fc_shelf_life | 365.0 |
| Height | 1000, 1500, 500, 75 |
| Identifier | 7425752435482 |
| IdentifierType | EAN |
| Is_expiration_dated_product | False |
| ItemClassification | BASE_PRODUCT |
| ItemName | Optiparts Optimist 25mm Low Friction Ring for Sprit Halyard |
| Item_name | Optiparts Optimist 25mm Low Friction Ring for Sprit Halyard |
| Item_package_weight | 0.2 |
| Item_type_keyword | sailing-hardware |
| Keyword | EX1321 |
| Link | https://m.media-amazon.com/images/I/31dvdDA-eKL._SL75_.jpg, https://m.media-amazon.com/images/I/31dvdDA-eKL.jpg, https://m.media-amazon.com/images/I/41nzq+xhfCL._SL75_.jpg, https://m.media-amazon.com/ |
| Memorabilia | False |
| Mpns | EX1321 |
| PartNumber | EX1321 |
| Part_number | EX1321 |
| ProductType | SPORTING_GOODS |
| Product_description | 25mm Low friction ring The lightweight alternative to a block with no moving parts these are an extremely low maintenance item. These rings are hard anodized with a PTFE coating to provide the smoothe |
| Product_expiration_type | Does Not Expire |
| Product_site_launch_date | 2021-06-04T15:07:44.710Z |
| Size | One Size |
| StrippedMpns | EX1321 |
| TradeInEligible | False |
| Type | ean |
| Unit | days, kilograms, pounds |
| Variant | MAIN, PT01 |
| WebsiteDisplayGroup | sports_display_on_website |
| WebsiteDisplayGroupName | Sports |
| Weight | 0.440924524 |
| Width | 1000, 1500, 500, 75 |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| landfallnavigation.com | HEX1321 | 72.0 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/157000000/157303500/part_--EX1321---OPTIPARTS--b9cb7ec41a.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp