2 pcs Butterfly Frame Hinge Clamp /DIY Tool Silk Screen Printing Hobby Printer Include Four Screws 2 pcs Butterfly Frame Hinge Clamp /DIY Tool Silk Screen Printing Hobby Printer Include four screws 009022 Easy to install and positive locking for perfect registration This is only one of the many screen printing neccessary tools. For Starters, new beginners learn how to screen printing. Durable and rust-resistant.the code number:009022