From the manufacturer:
In early 2009, James Hetfield contacted EMG Pickups president Rob Turner and presented him with a challenge: to create a “stealth” looking set that captures the clarity and punch of a passive pickup and still retains the legendary active tone that molded a generation.
Now available in EMG Metal Works Finishes and EMG’s Solderless Installation System components, the JH Set consists of the JH-N (neck) and the JH-B (bridge). Both were patterned after the pickups James had used for 30 years, but the end result was a completely different animal. The JH-N has individual ceramic poles and bobbins that feature a larger core and are taller than the 60. This produces more attack, higher output, and fuller low end in the neck position. The JH-B uses the same type of core but has steel pole pieces, unlike the 81 that uses bar magnets. This produces the familiar tight attack with less inductance for a cleaner low end.
Metal Works consists of six stainless steel cap options for any of EMG's active or passive humbucker pickups. These U.S.A made caps are available in Gold, Chrome, Brushed Gold, Brushed Chrome, and Brushed Black Chrome. These striking new designs offer players and instrument builders a broader range of premium cap options. All the power and clarity of EMG electronics, now with a modern classic look.
In the box:
PACKAGE INCLUDES EMG'S EXCLUSIVE SOLDERLESS INSTALL SYSTEM:
2 25K VOLUME POT
2 25K TONE POT
1 BATTERY BUS
1 STEREO OUTPUT JACK
1 TWO PICKUP IN/OUT BUS
2 PAIR MOUNTING SCREWS AND SPRINGS
2 PICKUP CABLES
4 CONNECT CABLES
1 OUTPUT CABLE
1 BATTERY CABLE