Check the listing for details. Brand New Generic Double Action Piston Hand Pump. Color: Yellow, Condition: New other (see details). Listed at 24.99 USD. Double Action Hand Pump Piston Air PumpDouble Efficiency Half of the time spent compared to traditional piston pumpsCapacity approx. 2x2000cm3 or 244 cubic inchesTo Inflate: Rubber boats, Air rings, Air jackets, Inflatable Mattress, etc. To Deflate: Please change the air tube from the connector at the right to the left at the main body. Maintenance: Unscrew the cap and pull it out together with the piston. Clean the inner cylinder and the piston and take care that the sealing rings are always lubricated. For assembly please place the piston carefully into the cylinder. THANK YOU FOR YOUR INTEREST IN OUR PRODUCTSIf you have any questions about the item, please contact us through eBay.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.