Pooja Shoe Master 31 K Sewing Machine Round arm industrial heavy duty sewing machine for stitching medium, heavy fabric (canvas) and leather upto 6mm thickness. Hardened critical parts for durability. Link thread take up system. Speed - 2200 S.P.M. Number of stitches can be from 5 to 25 stitches per 25mm. Drive system : (a) Manual - foot treadle on stand / table. (b) Motorised. Available in Top, Hand and Foot Operating versions at extra cost.