View cart “591-24A Replacement Needle Bushing Assembly” has been added to your cart. 591-42 Retaining Ring$3.50 591-42 Retaining Ring quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Retaining Clip Related products 591-09 O Ring $4.50 Add to cart 591-23 Replacement Fluid Needle Spring $5.95 Add to cart 591-01 Retaining Ring $14.95 Add to cart 591-31A Air Inlet Assy. $9.95 Add to cart