Features:The needles are smooth, suitable for heavy or thin line. The handle is made of TPR silica gel,it is very safe and gentle to your hands. Complete specification,9 different sizes of needles to satisfy all your needs. This ergonomic soft crochet hook makes you crochet for hours without fatigue, feeling pain or cramping on hands or thumbs. You can use this tool set knit the product as you like. Specification:Material: Aluminum + PlasticColor: 9 ColorsPackage: #1, PU/#2,PVC (Optional)Quantity: 9 PcsWeight: Approx.168g~240g / 5.9oz~8.5ozSize: 16.3 * 1 * 0.7cm / 6.4 * 0.4 * 0.3in9 Sizes: 2mm/0.08in 2.5mm/0.1inch 3mm/0.1in 3.5mm/0.12in 4mm/0.16in 4.5mm/0.18in 5mm/0.2in 5.5mm/0.22in 6mm/0.24in Package List:9 * HooksNote:Please allow 1-2 mm error due to manual measurement.There are many sizes of crochet hook, this one is ordinary and suitable for most knitting yarn. Please choose the hooks according to your yarn size.