Product name:Vacuum blood collection tube,VTM tube,Medical Needle,ETC. Cap color : Red, blue, yellow, green, black, purple, gray Draw volume:1-10ml Specifications:12x75mm,12x100mm,13x75mm,13x100mm,16x100mm Material:plastic,gl Free Sample Bennett Cangzhou Yongkang Medical Devices Co.,Ltd Add:Daguanting Industry District,Cangzhou City,Hebei Province,China. Email:bennettpan@foxmail.com / bennettyk@yeah.net Whatsapp/Wechat:+008618103277029