Koken 1/2" Dr Attack Driver Knurled Handle - 6pc #2-3 Phillips, 9-11mm Flat Pry Bars Commonly used for measuring wall

Commonly used for measuring wall thickness of tubes and sheetmetal products

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Koken 1/2" Dr Attack Driver Knurled Handle - 6pc #2-3 Phillips, 9-11mm Flat Pry Bars Commonly used for measuring wallAN112A Attack Driver Knurled Handle 6pc 1 2"Dr Includes #2 3 Ph 9 11mm Flat Bits & HolderSpecial heat treatment is applied on the body Hardness of striking part is slightly softer to prevent cracks On the other hand, cam part converts the striking power to twisted by striking with a hammer, therefore this part is finished with higher hardness to improve anti wear Stronger spring is adapted to convert the striking power efficiently to twisting power