Personal A6 binder ring mechanism comes with two screws. HIGH QUALITY: Made of premium gold plating stainless steel, durable and sturdy construction will not be bend or damaged easily. This slim design will be easy for any DIY cash envelope wallets. 
 
The binder insert size is 7.38in x .5 inches.
 
The Personal size rings in diameter are 19mm.
 
A screw driver will be needed for installation. 
 
Please verify you wallet measurement to ensure the sizing of the ring mechanism will fit.