Each spindle rod measures 12cm (4.7 inches) long. If you are replacing 8cm (3.1 inch) long bolts, these extra long spindle rods can add just over 3 inches of extra reach to your gate, potentially helping you span a wider opening or achieve a sturdier fit. Pack of 4 small wall protectors are 2.625" wide, designed to be less obtrusive than larger models and to better fit smaller openings like doorways and baseboards. Inner diameter of 1.625" fits all standard size pressure rods. Wall protectors extend gate's maximum width 1.25" (5/8" extra spacing off of wall on each side) to optionally aid in fitting wider openings. Choose between clean white, classic black, or elegant bronze to match or complement your gate.