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KNAPSACK ER PUMP with MOTOR for Knapsack ELECTRIC Rechargeable er 100% Japan Quality ISO 9001 Certified Quality >>> 3 MODELS AVAILABLE <<< MODEL / OPTION 1: 110 PSI PUMP NO THREAD ( Clamp Type) OUTPUT 4.0L/min MAX PRESSURE : 110 PSI Voltage 12V Amp 3 Amp MODEL / OPTION 2: 90 PSI PUMP NO THREAD ( Clamp Type) OUTPUT 3.6L/min MAX PRESSURE : 90 PSI Voltage 12V Amp 2.3 Amp MODEL / OPTION 3: 90 PSI PUMP WITH THREAD ( ROSCAS Type) OUTPUT 3.6L/min MAX PRESSURE : 90 PSI Voltage 12V Amp 2.3 Amp