Helmet Adjuster For Cycling Head Locking Buckle Helmet Retention System

Description: *Brand new and high quality *Made of high quality material, durable and functional * Easily adjust the head circumference to ensure the stability of the helmet *Installation method: Turn the knob to the maximum head circumference, fix the adjuster on the helmet with adhesive tape, check whether the position of the nail and the hole are consistent,

record the position of the hole, and then consider the installation method, cut off the excess parts, and then punch hole, embedded in the hidden button, and finally installed *Great for cycling, skiing, skating, equestrian, mountaineering helmets

Specification: * Material: Plastic *Color: Black (As Pictures Show) *Size: Jack spacing: Approx. 21mm (As Pictures Show) *Weight: about 60g

Package includes: 1x Helmet Adjuster

Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.