Check the listing for details. Mel Academy Introduction 12+ Tin Dendrite Tin HedgeHog Chemistry Set. Condition: New. Listed at 24.99 USD. Description A MEL Academy Chemistry Set for making a Tin Dendrite and a Tin Hedgehog Contains Liquid Soap Sodium Hydrogen Sulfate x4 Tin (II) chloride x4 Zinc Petri Dish x2 Battery Holder Bottle Nozzle x4 Crocodile Clip Wire x2 Paper Clip Plastic Vial x2 Protective Gloves Instructions THANK YOU FOR YOUR INTEREST IN OUR PRODUCTS If you have any questions about the item, please contact us through this website. 20% restocking fee for all wrongly ordered items. If the product is DOA or damaged in delivery, we will exchange or refund the full amount of the original order. We reserve the right to exchange damaged or defective products before refund. If the product was not professionally installed or not returned in condition received, refund is subject to a restocking fee. We give a 30-day warranty from the date of delivery unless specified. Shipping is non-refundable.