by raimundo » 10 Apr 2006 10:34
some kryptonite U locks for bicycles have the lock inside the end of the tube, this is always a 137 (also known as a 136) in the common diameter, and not compatible with the bic biro pen barrel, but the type of kryptonite lock with the lock in the tube sideways is the 137s ( s for small diameter) and this fits the bic biro. This worked the first time I tried it in about 90 seconds, the next five or six times I tried it, no joy. I have quit trying. I believe that it works best on hot summer days and will not work in winter. The plasticity of the pen barrel is subject to heat, and becomes harder and more brittle in low temps.