The universal design of the CWP-7 has a rotating tip pressed into each end of the tool (11.3mm and 16.3mm) so it will remove both square tapers and splined (ISIS Drive™, Octalink®) crank arms. Also fits BNI cranks on Bosch® e-bikes. The CWP-7 is made for the 22 x 1mm threading in the common cranks.