Sold in 10ft boxes only.

Hollow pin chain

Pitch: 31.75mm (1 1/4")
Roller Diameter (R2): 19.05mm

Width Between Link Plates: 9.53mm
Pin Diameter (D): 5.09mm
Pin Length (L1): 10.30mm
Pin Length (L2): 12.00mm

Plate (T): 2.0mm
Width (H): 15.00mm

http://tsubakimoto.com/pdf/product/e_sconveyorchain.pdf