Different model Buttons with a variety of options. You can make magnets, key-chains, and bull dog clips simply by assembling a button without a pin and adding the necessary accessories. Along with the standard button model also produce collect back buttons, prong back buttons, and new mirror back buttons. Feature: a) Model No.: jxl110301 b) Steel or aluminums framework c) Φ25mm&Φ32mm&Φ44mm&Φ58mm&Φ75mm d) Shipping weight approximately7.8-10kg. e) 44 cm ?29 cm ?39 cm f) Optional accessories and Lifetime warranty on model element