TOOGOO(R) 6mm Threaded Stem 40mm Dual Wheel Rotatable Caster Black Product Name : Threaded Stem Caster Wheel;Type : 360 Degree Rotation,Dual Wheel Wheel Size : 40 x 9mm / 1.6'' x 0.35''(D*T);Total Size (Approx.) : 45 x 35 x 60mm / 1.77'' x 1.38" x 2.36"(L*W*H) Threaded Stem Dia. : 6mm / 0.24";Threaded Stem Length : 12mm / 0.47" Material : Plastic, Metal;Color : Black Weight : 46g;Package Content : 1 x Threaded Stem Caster Wheel