View cart “591-14A Air Bushing Assy.” has been added to your cart. 591-20 Needle$19.95 591-20 Needle quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Fluid Needle Assembly Related products 591-32 Air Connector $9.95 Add to cart 591-41 Packing Screw $2.50 Add to cart 591-31A Air Inlet Assy. $9.95 Add to cart 591-14A Air Bushing Assy. $36.95 Add to cart