The Newlong DKN3BP gets an Upgrade. It wil be shipped witha Gear pump and wil be renamed as DKN-3BP-GP where GP stands for Gear Pump. The Gear pump is more reliable then. When ordering a DKN-BP customers wil automatically delivered the new DKN3BP with Gear Pump installed. The DKN3BP is the fastest Bag making Sewing machine head on the market and is compatible with the Union Special 51600. Therefore the DKN-3BPGP is a great alternative to the Union Special 51600 series Sewing Machine head. A twin Needle Newlong DKN-3BP Sewing machine head is available.