A great assortment of useful sets of industrial grade components at a low wholesale price. 30 items in total, including 10 pcs different ml/cc luer lock plastic syringes pack, 10 pcs different gauge/ga blunted needles and 10 pcs air-tight tipped caps, good starting point from which to decide if you need bigger or smaller. Exclusive outfit silicon ends, soft silicon caps can protect you not to be hurt, and also more convenient to store liquid in the syringes for future using. Luer lock connection, the luer lock is a connector can prevent the needle falls off from the syringes. Also great for wood adhesive, glue injector, essential oil dispenser, grain alcohol, science lab measuring, vg pg for vaping, ej e cigs mixing, hobby crafts, paint, precision applications of CA glues, ink refill, perfume measure and injection, lubricants, sealants etc.