JB60's BL Hand wound to get that ‘60s Bass Growl. These pickups are relicas of the pre '65 Black JB pickups.Using Formvar wire, sandcast Alnico 5 magnets, this pickup is perfect for that throaty Jaco sound.With covers. 8K – 9K $190.00 / set JB60's GR This set is a replacement for '60's grey JB pickups . This set is perfect for that ’65 Bass sound. It has an aggressive bottom and punchy mids. Great for Motown or ‘60s psychedelic sound.With covers. 8.5K – 9.3K $190.00 / set