Stomp pins can be installed from the bottom of the pedal platform for longer length and more traction, or installed top-down to capitalize on the pin-head's concave shape and slightly shorter profile.
Concave pin head
Installs with 2mm hex key or 5mm box wrench (not included)
Effective length is 5.5mm when installed from the bottom, 4.5 when installed from the top
Pins are standard M4 x 0.7mm threading
Made from steel