... 304, 25G, 27G, or 30G, length 13mm 16mm 21mm 25mm, 31mm, 38mm 41mm 2. Hub: Made of medial grade PVC, with inside screws ... -transparent PE with skidproof stria, nether Cover is made of transparent PE. Specification: This needle is used with special stainless ... , Self tap ribs placed on the outside of the hub, Inside screws make for ease of use. Packing: 1PC/plastic cover, there ...