2 Holes Silver Tone Flange Ball Transfer Unit Mounted Bearings 5pcs Product Name : Ball Transfer Unit;Material : Metal FixingThread Diameter : 3.7mm / 0.15";Wheel Diameter : 14mm / 0.9" Total Size (Approx.) : 48 x 32 x 21mm / 1.9" x 1.3" x 0.8"(L*W*H);Color : Silver Tone Weight : 196g Package Content : 5 x Ball Transfer Unit