The 
NUPROL Holster Belt Adaptor Base
 is a durable polymer mounting solution designed to attach various NUPROL holsters securely to belts and tactical rigs. It features an adjustable height and 360-degree rotation system, allowing for custom draw angles and optimal positioning relative to plate carriers or battle belts. 
 
Key Specifications and Features
According to NUPROL and major airsoft retailers like Patrol Base, the adapter offers the following specifications: 
Material: Constructed from high-quality, law enforcement-grade polymer for field durability.
Adjustability: Features a toothed rotary interface (40-slot interface) for 360-degree orientation adjustment.
Dimensions: Patrol Base lists the product dimensions as approximately 14.6cm x 11.5cm x 3.1cm.
Weight: The unit weighs roughly 0.111kg (approx. 3.9 oz).