ECG / EKG Medical Grade Recording Chart Paper, Roll, Blue Grid, 120x30, Equivalent to Q-Med INA-001, 2354481. Fits Q-Med model Interp 1000 (Also fits Dot-card Excel 103/106 and Dr Lee ECG-310A) (sold by the roll, 50 rolls per case) Availability: Usually ships the same business day Q-Med INA-001 equivalent A19191$3.62 Copyright 2006-2011, A1cardiology.com