0.7mm 100m Natural Hemp Waxed Thread Round Cord Strong Handwork Leather Craft Sewing Wax Line (Black) Great for sewing book bindings and other projects where a sturdy thread is needed that stays put and won't tear at edges. Thread Diameter: about 0.7mm ; Type: Round Cord It is slightly waxy but not sticky. Suitable for DIY handicraft, luggage, handbags, wallets and other leather goods.