Step shape design enlarge the contact surfaces between the carbon fiber sheet and standoff, have a thicker thickness but avoid increase the weight after increase the thickness. Perfect design increase the function but avoid the shortness, which makes it more popular.
Customized sizes are all acceptable for us. for the most popular type, M3X25mm, M3X30mm, M3X35mm length, have all color in stock, could ship timely.
Color for reference: black, red, blue, purple, pink, green, silver,orange, gold.