Use on German grandfather and grandmother movements. Can be used on others. Polished brass finished lyres, plain bobs and rods. #31002, #31003 and #31007 have straight rods. All others have twisted decorative rods. Pendulums are shipped in a separate reinforced box for safe delivery. For 94cm Movements. Overall length is 33-1/2". Bob diameter is 140mm (5-1/2").Made in Asia.