BZ-4(8)- 8 magnets PAS. KT-D12- 12 magnets PAS (If you need 12 magnets PAS, the extra cost USD3 will be charged). This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Electric Bicycle Components". The seller is "cscwheels" and is located in this country: CN. This item can be shipped worldwide.