Lykke Needles are very smooth and light. The Interchangeable system provides 12 sizes of 5″ Lykke tips (US 4 (3.5mm), 5 (3.75mm), 6 (4.0mm), 7 (4.5mm), 8 (5.0mm), 9 (5.5mm), 10 (6.0mm), 10.5 (6.5mm), 11 (8.0mm), 13 (9.0mm), 15 (10mm), 17 (12mm)),fivecords (2x24in, 2x32in, 40in), 4 cord keys, 8 stoppers, 2 connectors. Thisstunninghot pink (color Blush) set comes in apretty tan case.