44T sold out. Get Tangent or Insight or Redline! Sinz gears are mostly sold out. We will send other brands comparable quality if needed to fill your order. Sinz 4-bolt, 104-bolt pattern chainrings are 5-millimeters thick, come in 36- through 46-tooth sizes and come in black. They’re compatible with 3/32 and 1/8 chains.