View cart “591-26A Air Valve 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 591-05 Air Ring $5.50 Add to cart 591-42 Retaining Ring $3.50 Add to cart 591-43 Trigger $6.50 Add to cart 591-32 Air Connector $9.95 Add to cart