This is a new, cut-to-order sale of 600V vinyl insulated wire (IV cable) [30m]. To deliver it to you at a low price, we will purchase from the cheapest major manufacturer based on competitive quotes from JIS-certified products (JIS C 3342). (Manufacturers include Sumitomo Electric Industries, Hitachi Cable, Fujikura-Dia, Aichi Cables, SFCC, etc.) We will roll up the wire that has been pulled straight from the drum roller, treat it with shrink film for simple waterproofing, and then deliver it to you. The earth wire is important for all home appliances, and is recommended for protecting equipment, improving the sound quality of audio equipment, and reducing noise in electronic devices. In addition to the above DIY work, please take advantage of our economical cut-to-order sales for practice in the Second Class Electrician's Skills Test and for electrical work grounding. ~ We will try our best to accommodate cut-to-order requests for specific lengths, so please feel free to contact us first.