The Max USA RB397 Cordless Rebar Tying Tool REDUCES TYING TIME and it is 5 times faster than manual tying. Makes ties in less than 1sec. per tie with consistent tie strength. High speed tying saves you time and money. LI-ION HIGHER CAPACITY BATTERY Thanks to the Lithium-lon battery technology the RB397 ties approx. 2000 ties per charge which is 5 times more than Ni-Cd model. Less charging time means more productive work on the job sites. Also Lithium-Ion battery has no Memory Effect so you can charge the battery whenever convenient. BRUSH-LESS TWISTING MOTOR - The brush-less electric motor offers higher efficiency and longer life. It increases ties per charge by 35% comparing with older model motor and does not require service caused by brush erosion or dirt on commutator. REDUCES RISK OF HEALTH PROBLEMS - Just pull the trigger this simple operation reduces potential wrist damage such as carpal tunnel injuries. Using the optional extension bar reduces the risk of back injuries.