Materials: The zipper jig is made of stainless steel, which is sturdy and durable for repeated use. Includes 3-foot bulk zipper. Size: Securely fits zipper sliders from #2.5 to #10. Use: The zipper jig allows easy attachment of custom zipper pulls to zipper tape. Frees your hands and helps prevent hand strain. Easy to use: Lower clamp securely attaches the zipper jig to your work surface. Upper clamp locks the jig rod in place from any direction. Note: The accessories shown installed on the main body in the first image are for demonstration purposes. The product includes only 3 replaceable accessories. Material: Stainless steel Color: Black Package Contents: 1 x Zipper Jig Sliders (including 3 replaceable accessories) 10 x Zipper Heads 1 x Roll of Zipper Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.