25T

 Micro Drive II chainrings are compatible with 1-piece and 22mm 3-piece BMX cranks CNC machined 6061T6 alloy construction 1pc/3pc 25T Alloy Purple 1/2` x...

 Micro Drive II chainrings are compatible with 1-piece and 22mm 3-piece BMX cranks CNC machined 6061T6 alloy construction 1pc/3pc 25T Alloy Purple 1/2` x 1/8` StandardUPC/EAN/GTIN: 888571061374

 Micro Drive II chainrings are compatible with 1-piece and 22mm 3-piece BMX cranks CNC machined 6061T6 alloy construction 1pc/3pc 25T Alloy Red 1/2` x...

 Micro Drive II chainrings are compatible with 1-piece and 22mm 3-piece BMX cranks CNC machined 6061T6 alloy construction 1pc/3pc 25T Alloy Red 1/2` x 1/8` StandardUPC/EAN/GTIN: 888571061343

 Micro Drive II chainrings are compatible with 1-piece and 22mm 3-piece BMX cranks CNC machined 6061T6 alloy construction 1pc/3pc 25T Alloy Silver 1/2` x...

 Micro Drive II chainrings are compatible with 1-piece and 22mm 3-piece BMX cranks CNC machined 6061T6 alloy construction 1pc/3pc 25T Alloy Silver 1/2` x 1/8` StandardUPC/EAN/GTIN: 888571061398