The moisture meter can quickly measure the moisture content of the grain. 1. SCOPE OF USE: Recording receiving spool for use with 1 or 4 in. For use with any open drum. 2. 6 OPEN: The empty receiving spool has an aluminum NAB flange of the aircraft with a classic pattern of 6 wind-resistant holes for bending resistance and additional strength. 3. Stainless Steel Screws: The 1 or 4 7 inch hollow spool includes stainless steel screws that won't undermine and corrode like other brands. 4. EXCELLENT EXCHANGE: Repair the tape recorder or replace it with a brand new spool to ensure excellent sound quality when recording, deleting, re-recording, etc. 5. DURABLE AND DURABLE: The hollow roll with 6 holes is made of aluminum and is durable. Low noise and accurate size. . 1 or 4 7INCH EMPTY ROLL UNIVERSAL TAPE FOR RECORDING . 1 or 4 7INCH EMPTY ROLL UNIVERSAL TAPE FOR RECORDING Specification: Item Type: 1 or 4 7 Inch Empty Roll Material: Aluminum Alloy Color: Silver Applicable Tape: 1 or 4 inch Roll Diameter: 7 inches Applicability: universal tape for recording spools Number of Holes: 6 Holes . 1 or 4 7INCH EMPTY ROLL UNIVERSAL TAPE FOR RECORDING . 1 or 4 7INCH EMPTY ROLL UNIVERSAL TAPE FOR RECORDING List of packages: 1 x1 or 4 7 Inch Empty Roll Note: Even for a 7 inch deck, a NAB deck hub adapter is required for any NAB volume. Remove the product and use it . 1 or 4 7INCH EMPTY ROLL UNIVERSAL TAPE FOR RECORDING . 1 or 4 7INCH EMPTY ROLL UNIVERSAL TAPE FOR RECORDING Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.