Free UK postage available.
Here's what SD say about the quarter pounder:
"There’s a reason this is our most popular Bass pickup: massive tone. The QP has a fat, punchy tone that pushes P-bass pickups past previous models with design and frequency improvements. The quarter-inch diameter pole pieces expand the magnetic field and extend the frequency ranges for a fat, full, punchy sound with tremendous mid-range presence and maximum output.
Though often used for heavy rock tones, this pickup gives amazing tonal versatility, making it a favorite across the board in live and studio settings."