Singlespeed, 30T, 102 mm crankarms, steel, for kid's bike

Singlespeed, 32T, 140 mm crankarms, steel, for kid's bike

Singlespeed 1/2" x 1/8", 46T, 170 mm crankarms, 9.5 mm cotter pin, 14 mm x 1.25 mm; 0.55" x 20.32 tpi

Singlespeed 1/2" x 3/32", 44 T, 170 mm crankarms, square, with chainguard

Singlespeed, 36T, 1/8", 140 mm crankarms, square

Singlespeed, 36T, 1/8", 170 mm crankarms, square

Singlespeed, 40T, 1/8", 170 mm crankarms, square