A substance pimple (4) has a plane inclined tine surface (3) provided with a plate front surface (1) of the tine plate (2) forms an acute angle alpha. The inclined tine surface (3) with respect to a pimple longitudinally on one side by the plate bottom edge (6) and the other by a - limited shank section line (22) - formed by intersection with the entire rear quarter (20). A on the inclined tine surface (3) located reference line (15) from a top - from the plate bottom edge (6) having the greatest distance - end point (A) of the inclined tine surface (3) further distances than from a shank end (11). Thus, both a simplified penetration of the tamping tine (4) in the ballast as well as an improved attachment of carbide tip is ensured.
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