Sunday Freeze Top Load Stem BlackThe Sunday Freeze Top Load Stem is die-cast aluminum with a forged 6061-T6 aluminum face plate. The bottom and sides are recessed to eliminate weight. These stems have 52mm of reach, a 33mm stack height, and a 34mm rise or 1mm drop while inverted. The 4 Clamp Bolts measure 8x1.25mm, and the 2 Pinch Bolts measure 8x1.25mm. Weighs 10.5 ounces.630950914593