Features:Thickened steel. Good workmanship ensure its durability and practicality.Precise thread and stable installation, ensuring smooth polishing of machine without loosening.This Angles Grinders extension rod can be installed to extend the Shafts of the Grinders, thus facilitating safe polishing in narrow space without the risk of damaging the object.Notches for easy removal with wrenches, smooth grinders and not loose.The rotating extension Shafts can be used for grinders and polishing deep stone such as inner corners and special shape.Must be combined with different grinders head, shape openers. Specifications:Component:SteelSize:Approx.8cm/3.15inch Note:1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item. Package includes:1Pc Extension Rod