6pc Klasse Serger HAX1SP Needle Variety Tin- Includes (2) AA5170.E Klasse Serger HAX1SP 80/12,4 needle cassettes, (1) AA5102.075 Klasse Stretch 75/11, 6 needle casette,(1) AA5102.090 Klasse Stretch 90/14, 6 needle cassette, (1) AA5101.991 Klasse Ballpoint Needle Assort 70/10 (2x), 80/12 (x2), 90/14 (x2), & (1) AA5118.090 Klasse Topstitch 90/14,6 needle cassette. Also includes QR code to instructional video on when to change needles, how to change needles, uses of each needle, and more!