Professional choice. the blade has great elasticity and durability. Hardened and tempered, hardened, hardness is good, the blade will not break. Made of heat treated high carbon steel with the necessary hardness and durability. Suitable for most inflatable hand-held hammers, scrapers or scrapers. Used for the removal of masonry and concrete, minor shreds and serrations, mortars, glass compounds and other masonry products. it is very sturdy and has a long service life. 9 different shapes of hammer tangents meet different job requirements. A superior quality air hammer wheel that can be used with pneumatic tools. Used for masonry and concrete removal, hard surface cracking and abrasion. colour:Photo Color Material:40CR steel Package Contents: 1* set Pneumatic hammer(9 pcs) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.