This block flogger has faux silicon blocks at the end of each fall. They have a nice thud and the semi sharp edge also give a bit of a sting, but not the sharpness of a plastic building block.
 
 
All toys are given a score of 0-5 on Minimum Safe Skill(Sk), Level of Thud(Th), and Level Sting(St).
 Skill ( 1 ) Thud ( 3 ) Sting ( 2 )