Check the listing for details. Harken Sailing Hardware * CHOOSE * Micro Block 16mm 29mm Single Double Triple. Condition: New. Listed at 12.49 USD. Up for consideration you will find a variety of Harken blocks, and other high performance Harken sailing hardware. Each Harken product in this listing is completely brand new and unused. There are a number of different blocks including micro blocks, 16mm blocks, 29mm blocks, bullet blocks and air blocks, each with varying functions. Below you will find a complete list of the Harken products included in this listing. 098 Single Wire Bullet 113 Pivot Bullet Cheek 224 Single Micro Block 226 Double Micro Block 228 Triple Micro Block233 Micro Cheek300 1" (25mm) Wire Block Single340 29mm Carbo Single 348 29mm Carbo Fixed351 29mm Carbo Ti-Lite353 BLK-29mm Traveler404 Single 16mm 405 Single 16mm w/ Becket 406 Double 16mm 407 Double 16mm w/ Becket 408 Triple 16mm 416 16mm Cheek 432 16mm Pivot Cheek BLK2651 Carbo-40mm Ti-Lite If you have any specific questions or would like more photos, feel free to reach out. *If you are outside of the United States, please message me before purchasing.* Thanks for looking!