This is equivalent to the HOZAN DK51 set. Please note the following: You will need to purchase additional electrical wires such as VVF 1.6 x 2-core, 3-core, and VVF 2.0 x 2-core. Other items can likely be reused. The outlet box has pre-drilled holes. Screwless conduit box connectors are already attached and have screws cut. There are no recessed outlet boxes (they cost about 100 yen at home centers). All rubber bushings have slits. There are no push-in connectors. There are no crimp terminals. There is no handbook. There are 5 ring sleeves inside. VVF 1.6 x 2-core VVF 1.6 x 3-core VVF 2.0 x 2-core, blue sheath VVF 2.0 x 3-core, blue sheath, 27cm VVF 2.0 x 3-core, red/black/green, 50cm VVR 1.6 x 2-core, 20cm long, 2 pieces VVR 2.0 x 2-core, 20cm long EM-EEF 2.0 x 2-core, 25cm IV 1.6 black, white, red IV 1.6 green, 13cm, 2 pieces