Strong Seal Extensions Long Straight Human Hair 60cm ¥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 to use. So, 1 sheet becomes 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. Separately sold replacement seals for seal extensions: 1 sheet for 20 pieces: ¥500 Seal only purchase: 1 sheet ¥680 We also have many other extensions for sale. You can see them here: Wig Length: Long Wig Length: Medium Wig Length: Long