The knife use for T-Shirt Bag Converting Machine (such as HEMINGSTONE,Limax,etc).T-Shirt machines provide an efficient and economical way for the large scale production of shopping bags in both high density and low density polyethylene. Our products last longer, meaning you'll replace them less often. Minimum Order Quantity: 100 Piece/Pieces Supply Ability: 3000 Piece/Pieces per Week Payment Terms: L/C,T/T,Paypal Quality control: serious and high precision