Casmed SC1SE Single Lumen Oocyte Collection Set (Standard). Oocyte Retrieval Needles. Designed for transvaginal aspiration of follicles to obtain oocytes. The set includes needle with tubing and bung for connection to a standard test tube. All needles have echogenic markings for easy recognition under ultrasound. The needle and its connections are all manufactured from high grade surgical stainless steel. The tubing is manufactured from translucent PTFE. Steam sterilized and designed for single use only. Standard needle is 17 gauge x 31cm with 60cm tubing. 1/EA. Priced per each. FREE Shipping!