“591-20 Needle” has been added to your cart. View 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 591-42 Retaining Ring $3.50 Add to cart 591-43 Trigger $6.50 Add to cart 591-01 Retaining Ring $14.95 Add to cart TB-591 Spray Gun-DISCONTINUED-SEE TB-592 Read more