The Hasler WJ Pro Mail Processing System is the mega monster of mail operations for industrial and production mail environments. With thickness adjustors at the ready, the WJ PRO speeds through 15,000 letters per hour with nary a glitch or a jam. This calls for a hard core ink tank to keep the efficient HP ink jet system flowing. Our Hasler WJ PRO is capable of providing a perpetually crisp stream of ink for a cool half million, that’s 500,000, pieces of mail. At a reasonable price we carry this monster WJ PRO ink tank. Buy it from us today and receive free shipping.