Actual Retail price at MiMotion. To be used in combination with a hammer. Impact Spanner Wrench – Hook Style, 148 mm Capacity, To be used with Hammer. High impact forces without nut damage. SKF impact spanners are designed for safely tightening and loosening larger locknuts, especially after driving up a large bearing onto a tapered seating. They are not intended to be used to drive the bearing up a tapered seating. Designed for safely tightening and loosening a wide selection of larger lock nuts. Not intended to be used to drive bearings up a tapered seating. Helps avoiding shaft and nut damage. Safe and user friendly. Impact applied effectively to the nut. Special wide impact face.