The kit includes 20 detent balls of 7/32" (5.5mm) diameter, which are commonly used in firearms for "click" adjustments and some semi-auto gas systems.
Detent balls can be costly to replace individually; this kit offers a cost-effective solution by providing a bulk pack of 20 balls.
The balls are made of chrome steel for enhanced durability and resistance to wear and rust, with refill packs available for purchase.