Grape Solar PhotoFlex Semi-Flexible Monocrystalline PV Solar Panel with 8mm Barrel Connector for Use with Goal Zero Nomad and Yeti, 50-Watt 8Mm barrel connector is compatible with goal zero yeti and Sherpa units Advanced technology back contact cells allow for flexibility and increased wattage per sq. Ft 2 bypass diodes minimizes performance drop due to partial shade High transmittance, flexible lamination material is less prone to cracking than traditional glass Unique frameless design includes four metal reinforced mounting holes for easy installation