Strong Seal Extensions Long Straight Human hair 60cm, No. 7 currently out of stock ¥160 per piece, sold in units of 10 pieces per color Seals are also the latest strong medical-grade seals 1 sheet is 4cm, cut in half for use So, 1 sheet makes 2 pieces 10 pieces: 5 sheets 10 pieces ¥1600 + shipping ¥250 = ¥1850 20 pieces ¥3200 + shipping ¥250 = ¥3450 30 pieces ¥4800 + shipping ¥250 = ¥4950 40 pieces ¥6400 + shipping ¥250 = ¥6650 50 pieces ¥8000 + shipping ¥250 = ¥8250 Shipping ¥250 Please comment with the number of pieces and color you want. Thank you. I also have many other extensions for sale, you can see them here: Wig Length: Long Wig Length: Medium Wig Length: Long