Accu-Chek Instant Strips are blood glucose test strips designed for use with Accu-Chek Instant and Instant S blood glucose meters. Each box contains 50 test strips for accurate self-monitoring of blood glucose levels. These test strips are manufactured by Roche and are specifically compatible with Accu-Chek Instant and Accu-Chek Instant S meters only. They provide reliable blood glucose measurements for self-testing at home. The strips should be used according to the meter's instructions for accurate results.