3M BLACK DUAL LOCK TYPE 250  "TYPE 250" MEANS THERE ARE 250 SMALL PRONGS PER SQUARE INCH. BESIDES SICKING TO ITSELF, IT ALSO MATES WITH TYPE 150 AND TYPE 400 DUAL LOCK AND FOR SEMI-PERMANENT APPLICATIONS THE "LOOP" PART OF hook & loop  AS WELL. 
 PART#- SJ3540  TYPE 250    
SIZE- 1" X 6" PIECES               
THICKNESS-MATED, APPROX 1/4"
QUANTITY- 4 PIECES
COLOR-BLACK

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