12v XL Seed / Pebble / Fairy Pixels - IP68 Rating and xConnect - FREE SHIPPING!  4 inch spacing between pixels Black wire Wire specs: 10 strands, 0.16mm cooper, 20awg approx.  Black wire that is labeled as positive (POS+), negative (GND-) and data and the direction of the data (DAT->) 2 year warranty Due to the manufacturing process of seed pixels, there is a greater inherent tolerance on the outside diameter of the epoxy seed blob.  Pixel bullets have a standard size, however there is a small variance of the epoxy blob.  For the seed inserts if one seed is larger than the order, some customers have used a soldering iron to make the seed holder a little larger. Great video by Greg Macaree doing a VLS review of the seeds here STL files for XL Seed Props (thanks to Rob Coulter!): Matrix: https://www.thingiverse.com/thing:6577392/files Coro XL Seed Insert: https://www.thingiverse.com/thing:6587174 Matrix Mesh and Coro Strip XL Seed Insert: VLS seed insert for Matrix and strip by livinglarge1970 - Thingiverse Ships from WI, and shipped the next business day after payment.Local pick up in Bristol, WI also works, contact Mark Tarkowski for pick up options.The video below is one of the durability tests we do to make sure quality pixels are being sent out and made from our manufacturer. The pixels were frozen in a block of ice for over a week in the freezer with no failures.  More durability tests coming soon.  Our manufacturer has been making pixels for 14+ years now.   Disclaimer - Visionary Light Shows is not liable or responsible in any manner for any direct, indirect, or incidental damages that may occur to your property arising from the use of our products.  All sales are final, no returns are allowed.   Warranty - 2 year warranty on all unclipped and modified strings of pixels.  They cannot be cut.