The copper buckles at the end point have been pressed, you don't need a special tool to do that
Material: Natural Rubber, strong, flexible, very good extending quality, durable.
Description
CR-6 SE 3D Printer timing belt for X Axis and Y Axis Specification: Rubber Opening Belt with Copper Buckle Type: 2GT GT2 Pitch: 2mm Belt Height: 1.38mm Tooth Height: 0.75mm Material: Rubber X axis Belt Length: 820mm Y axis Belt Length: 743mm Width: 6mm Shape: Open timing belt Package Details: 1 pcs X timing belt + 1 pcs Y timing belts for Creality ender 3 3d printer