Excellent slidable performance for medical staff to easily perform clinical injection. Strong graduation ink adhesive force, friction resistance ,not easy to fall off. Universal fit : Conical lock fitting, with 6% confirm with international standards, can be used with any product with 6% conical lock fittings. clearly observe solution and bubbles with transparent barrel : push of plunger with skidproof structure that easy to grip : the inner cavity of the rear end of barrel with skidproof structure to prevent the plunger from accidentally sliding. Size: 3 piece, 2 piece, Luer slip, Luer Lock Concentric, Excentric, it can meet different needles.