Set of 100 Extensions with I-Tip Bonding each weighing 1 Gramm. Total weight of the set is thus 100 Gramm. Length is 18 inches. The originally black asian hair has been processed and dyed in darkest brown (Standard 3. You need shrinkies or micro-rings to bring I-Tip extensions in your hair..Natural looking hair extensions made from 100% human hair - with 1 Gramm per extension/strand these extensions are very full - a lot of cheaper sets on the market only offer 0,5 per strand. The whole set has a weight of 100 Gramm as it contains 100 of these I-Tipped extensions. To use I-Tips in your own hair you need shrinkies or micro-rings.Product no.: 18HH-1G-3(D076)