The 4 Needle Flat Bed Double Chain Stitch Sewing Machine is used in wide range of applications on mid heavy and heavy weight fabric and special unique rear puller mechanism. Applications Lap seamingAttaching waistbands and line tapesInserting elastic Options 1308PR : Machine with 2'independent lower rollers and a rear puller (4 needle machine for waistbanding and curve seaming)1303PTF : Machine with rear puller and tractor presser foot (3 needle machine for lap seaming)1302L : 2 needle machine for line tape attachingMD-1 : Metering Device