Product Description Brand: YONEX/Yonex Astrox Series Model: Yonex ASTROX 100ZZ Material: carbon fiber Color Category: Navy Blue/Red Product weight: 4U G5 recommended Pulling Pounds: 20-28 lbs Weight: 80g (inclusive)-84g (inclusive) G5 Shaft Stiffness: Hard Classification of badminton play: offensive type (head heavy rod hard)