Discover our improved garage door tension tool model, smaller and lighter version for the same performance and reliability Important notice for U.S. customers:Please check the current import tariffs, duties, and customs regulations before placing your order. Spring Winding Tool for Residential Garage Doors AceWinder Residential is a power drill-operated spring tensioning tool for residential garage door installations and maintenance. AceWinder can be used with the most common spring sizes, including in door designs that have a low headroom. Operated with a standard cordless drill with an option for 1/2" or 13mm hex drive socket. Please use drill, not impact driver. Using an impact driver can damage the tool. Can wind up to 200Nm (150ft-lbs) of torque 16 turns a minute with a 1500 RPM drill Weighs 3.4 kg (7 lbs) 3-year Product Warranty 30-day Money Back Guarantee (excl. shipping) Stop injuries with AceWinder Residential. If you are buying over 10 units, please contact [email protected] for discounts. Note: We are not able to prepay customs duties or tariff fees for shipments to the United States. These costs remain the responsibility of the buyer.