Set includes: 16 - steel crochet hooks: .75mm (US 14), .85mm (US 13), 1.mm (US 12), 1.1mm (US 11), 1.3mm (US 1), 1.4mm (US 9), 1.5 (US 8), 1.65mm (US 7), 1.8mm (US 6), 1.9mm (US 5), 2.mm (US 4), 2.1mm (US 3), 2.5mm (US 2), 2.75mm (US 1), 3.25mm (US ) & 3.5mm (US ), 8 - aluminum crochet hooks: 3.25mm (US D-3), 3.5mm (US E-4), 3.75mm (US F-5), 4.25mm (US G-6), 5.mm (US H-8), 5.5mm (US I-9), 6mm (US J-1) & 6.5mm (US K-1.5) & 1 - vinyl zippered case.