1/4" shanks; Very nice aluminum case, Cylinder Shape : 1/2" Diameter x 1"L, 3/8" Diameterx3/4"L, 3/8" Diameterx3/4"L, 1/4" Diameter x 5/8"L, Round Ball Shape : 3/8" Diameter & 1/4" Diameter, Round Tree Shape : 1/2" Diameter x 1" L, Tapered Cone Shape : 3/8" Diameter x 3/4"L