These high-quality, USA made time cards work with virtually all non-calculating, top load time recorders (* see compatibility exceptions noted at the end). The 6 column, 2 sided, 31 day format is the standard for most inexpensive imported time clocks on the market. This includes models from popular brands such as Pyramid and uPunch, as well as generic brands such as FLEXZION, TERA, YESCOM, YIYIBYUS, ONEUTRALON , BANLICALI, SEANESZTI, NUOBESTY, VEVOR and many others. * compatibility exceptions: NOT for use with thermal print clocks, NOT for use with calculating clocks, NOT a replacement for cards with holes punched at the bottom