Vintage Style Jazz Bass Pickup Set w/FormVar Wire - Flush Pole AlNiCo 5 Magnets - Handcrafted Lacquer Dipped Bobbins - American Standard Pole Spacing - 50s/60s Style Heavy FormVar #42 Magnet Wire - Hand Wound to Vintage Specs with a Medium-light Scatter - Bridge 7.6K Ohms (+/- 3% @ 68 Degrees F) - Neck 7.3K Ohms (+/- 3% @ 68 Degrees F) - Neck is RWRP for hum-cancelling - Lightly Potted in Black Wax - Aged Cloth Leads - Black Pickup Covers & Mounting Screws Included. Sound wise. the bridge pickup has the traditional clear punchy tone  and the neck pickup has a classic warm and smooth tone normally associated with the vintage early 1960s Jazz Bass instruments. The FormVar versions tend to be a little warmer in tone with more complex harmonics verses the Plain Enamel magnet wire versions which have better high end performance.