Features:1.The product is made of stainless steel,and thus is corrosion resistant and has high strength, and is durable.2.The product can be used for making the hem of garments, suitable for industrial sewing machine.3.This product is suitable for lockstitch sewing machines and computer carts.4.No need to change the presser foot and teeth during use, which is convenient and practical5.The product is suitable for wrapping non-woven fabrics and ring-shaped edges for suit bags.specification:Item Type: Sewing hemmers: Approx. 20mm / 0.79in, 22mm / 0.87in, 24mm / 0.94in, 26mm / 1.02in, 28mm / 1.1in, 30mm / 1.08in, 32mm / 1.16inScope of Application:1: Suitable for all brands of sewing machine and computer controlled lockstitch sewing machine2: Suitable for multi-function sewing machine3: Suitable for old-fashioned pedal sewing machineIn and Out Unit Size:In: Approx. 20mm / 0.79in, Out: Approx. 5mm / 0.2inIn: Approx. 22mm / 0.87in, Out: Approx. 5.5mm / 0.22inIn: Approx. 24mm / 0.94in, Out: Approx. 6mm / 0.24inIn: Approx. 26mm / 1.02in, Out: Approx. 6.5mm / 0.26inIn: Approx. 28mm / 1.1in, Out: Approx. 7mm / 0.28inIn: Approx. 30mm / 1.08in, Out: Approx. 7.5mm / 0.3inIn: Approx. 32mm / 1.16in, Out: Approx. 8mm / 0.31inPackageList:1 x Sewing Hemmer2 x Screw