Block Magnets 25.4 x 6.35 x 2.54mm thick ---> Dimensions: 25.4 x 6.35 x 2.54mm thick Tolerances: ±0.004" x ±0.004" x ±0.004" Material: Silver Shine like Plating/Coating: Ni-Cu-Ni (Nickel) Magnetization Direction: Thru Thickness Weight: 0.0678 oz. (1.92 g) Pull Force, Case 1: 4.45 lbs Surface Field: 2256 Gauss Max Operating Temp: 176ºF (80ºC) Brmax: 14,800 Gauss BHmax: 35 MGOe WARNING: KEEP OUT OF REACH OF CHILDREN. THIS IS NOT A TOY. DO NOT INGEST OR INHALE. SEEK IMMEDIATE MEDICAL ATTENTION IF MAGNET(S) ARE SWALLOWED OR INHALED. MAGNETS ARE BRITTLE. BROKEN MAGNETS ARE SHARP. MAGNETIC MEDIA AND ELECTRONIC EQUIPMENT HAZARD. KEEP AWAY FROM PACEMAKERS AND INTERNAL MEDICAL DEVICES. Thank You For Looking !!!Buy with confidence from a trusted seller Terms and Conditions. How long until my order is shipped?: Depending on the volume of sales, it may take up to 2 business days for shipment of your order after the receipt of payment. How will I know when the order was shipped?: After your order has shipped, you will be left positive feedback, and that date should be used as a basis of estimating an arrival date. After you shipped the order, how long will the mail take? USPS First Class mail takes about 3-5 business days to arrive in the U.S., international shipping times cannot be estimated as they vary from country to country. I am not responsible for any USPS delivery delays, especially for an international package. Is there a money back guarantee? I offer a 14 day money back guarantee. I stand behind my coins and would be willing to exchange your order for either store credit towards other coins, or refund, minus shipping expenses, My goal is to have the returning customers for a lifetime, and I am so sure in my coins, their authenticity, numismatic value and beauty, I can offer such a guarantee. Is there a number I can call you with questions about my order? You can contact me directly via my contact link to get information only in regards to items purchased on eCRATER. When should I leave feedback? Once you receive your order, please leave a positive. Please don't leave any negative feedbacks, any issues can be resolved, as reputation is most important to me. My goal is to provide superior products and quality of service.