View cart “591-42 Retaining Ring” has been added to your cart. 591-44 Stud$3.50 591-44 Stud quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Stud Related products 591-24A Replacement Needle Bushing Assembly $29.95 Add to cart 591-31A Air Inlet Assy. $9.95 Add to cart 591-20 Needle $19.95 Add to cart 1 TB-591 Spray Gun $175.00 Add to cart