Dual size
Size: 27.2/31.8mm or ,31.8/34.9mm, 31.8mm / 37.3mm( GINEYEA) for carbon frame, and also fit for alloy frame, kid balance bike.
Weight: 35g(31.8/34.9mm) , 34g(27.2/31.8mm), 40g( 31.8mm / 37.3mm)
Toque: 5 NM
Material: AL6061, SILVEROCK is new ,,GINEYEA( size 31.8/37.3mm), is Forged .
Color: black red