Cuts threads into pre-drilled holes in concrete, brick or block. with alternating raised/lowered threads & diamond cut notches which provide exceptional holding power and stability. Countersunk head with Phillips recess.
 

Cuts threads into pre-drilled holes in concrete, brick or block. with alternating raised/lowered threads & diamond cut notches which provide exceptional holding power and stability. Countersunk head with Phillips recess.
 

Cuts threads into pre-drilled holes in concrete, brick or block. with alternating raised/lowered threads & diamond cut notches which provide exceptional holding power and stability. Countersunk head with Phillips recess.