This is a set of 20 used PP 1100cc bottles that were used once after purchasing them as pre-made mushroom spawn bottles. The bottles were originally purchased from: KB Farm, with filters, 20 bottles They have been washed, but please be aware that there may be scratches and stains. Please refrain from purchasing if you are concerned about minor details, as these are used items. The cardboard box used for shipping will also be used. Thank you for your consideration. * We do not offer discounts or changes to the number of bottles. * Regarding delivery dates and times, if there is no contact or a delay after your purchase, we will specify the earliest possible delivery date. Please understand. Please receive the package at your home or a business location. Type of insect rearing supplies: Larval rearing supplies/mushroom spawn bottles Type of insect: Stag beetles