View cart “591-06 Lock Screw” has been added to your cart. 591-31A Air Inlet Assy.$9.95 591-31A Air Inlet Assy. quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Air Inlet Assembly Related products 591-32 Air Connector $9.95 Add to cart 591-24A Replacement Needle Bushing Assembly $29.95 Add to cart 591-43 Trigger $6.50 Add to cart 591-02 Air Cap $29.95 Add to cart