SNAP-OFF TYPE; 4-1/4 INCH BLADE LENGTH; 0.02 INCH BLADE THICKNESS; QUICK POINT[R] BRAND; NUMBER OF BLADES 3; NUMBER OF POINTS 8; USED ON 10-218, 10-480, 10-380, 10-280, 10-220, 10-481 AND 10-151, 18 MILLIMETER SNAP-OFF BLADE KNIFE