This is the small size from Crane, designed to fit any steerer tube (spacer), that is 50% louder than the little brass bells that aren't quite loud enough, and louder even than your typical ding ding bells. Every bike should have one. Great for the minimalists out there as looks good on any bicycle whether traditional bike, racer, single speed, fixie rider - quite simply cycle chic personified.
Crane bells are made in Osaka, Japan. These traditional designs are timeless and have beautiful clear ring tones.