Needle-only sets (standard and short tips) - Denise Interchangeable Knitting and Crochet
Love2Knit, Sharp Short Tips - Denise Interchangeable Knitting and Crochet
Individual Interchangeable Circulars - Denise Interchangeable Knitting and Crochet
Amazon.com: Interchangeable Knitting Needle Set, Carbonized Bamboo Crochet Needle Aluminum Circular Knitting Ring Set with Storage Bag for DIY Handmade Knitting Projects
Love2Knit - Denise Interchangeable Knitting and Crochet