SPARE PLAIN RUBBER BULB (no hardware) w/free mounting tips booklet & protectant - fits most bulb horns RUBBER BULB ONLY: Hard-to-find item. Perfect when you need just the bulb, but not the hardware. JUST INSERT HORN TUBE AND START HONKIN': Fits virtually all bulb horns (except Mini). FREE EIGHT-PAGE FULL-COLOR ILLUSTRATED BULB MOUNTING TIPS BOOKLET packed with each shipment. CERTIFIED INSPECTION: Authentic Folkroots bulb horn products include official inspection certificate verifying item was bench tested, passed, and guaranteed by Bone Dry Musical Instrument Co. HAND APPLIED PROTECTANT: Extends life of rubber. Guards against ozone, oxidation and UV radiation.