844D-B4B13FW - 844D Hollow Shaft Incremental Encoders, Rear (Through-Shaft), 1/2 Inch, Tether, 3/8 in. bolt on a 5.88 in. dia. B.C. (to fit 4.5 in. NEMA C face), 1m (3.28ft) Cable, 5-15V DC In, 5-15V DC DLD Out (4469), 1024 Pulses Per Revolution

844D-B4B13FW - 844D Hollow Shaft Incremental Encoders, Rear (Through-Shaft), 1/2 Inch, Tether, 3/8 in. bolt on a 5.88 in. dia. B.C. (to fit 4.5 in. NEMA C face), 1m (3.28ft) Cable, 5-15V DC In, 5-15V DC DLD Out (4469), 1024 Pulses Per Revolution