This is a skills training textbook required for rigging work. As shown in Photo 3, the textbook has been marked with a highlighter. Please be aware of this. - Title: Rigging Worker Textbook - Publisher: KOBELCO Training Center - Content: Skills training textbook #KOBELCO #コベルコ #玉掛け #技能講習 To prevent any issues, please check the condition of the item in the photos before considering your purchase. This item is stored at home, so please refrain from purchasing if you are sensitive about such matters. 〇Product Notes〇 Please note that the color of the product may differ depending on the shooting environment and your device. Thank you for your understanding.