Wig Length: Long Strong Adhesive Seal Extensions 52cm Long Straight Human Hair ¥140 per piece, GLAY out of stock 1 sheet is 4cm. Cut in half to use. So, 1 sheet makes 2 pieces. 10 pieces is 5 sheets. These are the most popular seal extensions at hair salons right now. Sold in units of 10 pieces per color. 10 pieces ¥1400 + shipping ¥250 = ¥1650 20 pieces ¥2800 + shipping ¥250 = ¥3050 30 pieces ¥4200 + shipping ¥250 = ¥4450 40 pieces ¥5600 + shipping ¥250 = ¥5850 50 pieces ¥7000 + shipping ¥250 = ¥7250 Shipping ¥250 Separately sold replacement seal: 1 sheet (for 20 pieces) ¥500 Seal only purchase: 1 sheet ¥680 I also have many other extensions & wigs for sale in my shop. If you need 10 pieces, please purchase as is. For additional pieces, please comment. Thank you. 1