Designed for 58mm button maker machines, our kit seamlessly works with most standard pin machines. Ideal for schools, businesses, or DIY enthusiasts needing bulk production. Package contains: 50 Front metal shells,50 Back metal shells and 50 Clear protective films,All elements quantity-matched for complete assembly cycles Premium-grade PVC film with light-reflective properties. Zinc-alloy front casing with structural reinforcement design. Precision-die-cut paper templates eliminating manual modification Ideal for: Academic event ,Identification tag production, creation (birthday/seasonal occasions),Textile-compatible accessory enhancement (outerwear, headwear, carry systems) Operational Sequence: Load front shell Graphic substrate Protective overlay into housing,Execute primary compression cycle, Position backing component in alignment base, Initiate final assembly compression, Retrieve completed badge unit Color: As shown Material: Metal Package Contents: 1set * pin backs Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.