Model No. ZM-22 ZM-40 ZM-50 Max Tying Diameter 21mm 40mm 50mm Time of Making a Knot 0.8 seconds 0.8 seconds 1.0 seconds Voltage DC9.6V DC9.6V DC9.6V Weight 2.15kgs 2.2kgs 2.25KGS Turns per Tie 2 turns/3turns 2turns/3turns 3turns/4turns Ties per Coil Approx. 260ties(2turns) Approx.160ties(2turns) Approx. 100 ties(3 turns) Ties per Charge 4-5 Coils 6-7 Coils 7-8 Coils -