Handle adds balance and “feel” to the syringe. Adjustable friction to control plunger resistance and plunger stop to prevent blowout. Multi-Pak includes one handle and a selection of 800 Series barrel/plunger combinations for 10, 25, 50, 100 and 250 µL volumes plus six needles for 10-100 µL and three needles for 250 µL syringes.