SQUARE TAPER BOTTOM BRACKETS
Phil Wood & Co. crank bolts are machined out of stainless steel and are 20mm long. This allows for more than 3/4 inch of engagement with the spindle. To maximize the strength of these bolts, the threads are first cold-forged then the bolts are subjected to two heat-treat processes to maximize their strength. The head of the bolt accepts an 8mm hex head wrench.