Buy 710 King Pen Vape Oil Cartridges for sale online in 0.5g. The 710 KingPen cartridge is a LoudPack Extracts personal marijuana / THC vaporizer, or “Vape Pen”. The high end vape cartridge comes in different strains. Simply choose your order quantity and when you get to check out page. Use the order note form to indicate what strains you want for your order.