Bombshell Ratchet is next generation of our US made , fully CNC'd crank set. It has been over 4 years now when our new 2 pc cranks started taking titles all over the World. We always try to deliver unique Bombshell design, listen to riders needs and comments, trying to make better and better products. Ratchet cranks are fully redesigned and improved to deliver better ride overall. Fatigue testing of AL 7075 - T6 spindle exceed strength of comparable chromo product while responding better to force applied to crank arms. Steel pedal insert ( Pro version ) is newly secured in its position with pin providing still position during pedal exchange. New spider locking system increases overall contact area between spindle and arm adding required stiffness to transfer the power to the rear wheel. The fact we machine cranks in house gave us a chance to increase strength, adding more material where needed while keeping the weight down to a minimum. Feel the difference. Ride the Ratchet.