Card Clamp badge clips are a must have for proximity and smart cards with electronics inside that would otherwise be damaged by the slot punching process.
Punching slots in ID cards causes several problems: it takes time, makes a weak spot in the card and compromises the protective overlay.
This clip on style card clamp makes slot punching a thing of the past, thanks to gripper pads that securely hold your card to a pull strength of 9 lbs. The attached badge clip can swivel to attach to shirt pockets or collars.