Really disappointed in the overall quality of sets I received. I bought this thinking to use the best on my window film installations. Problems : 1) Zipper on the case is very rough to close, sticking. 2) the #2 handle requires a crazy amount of force to lock the blade in place and even then becomes loose making it unusable. 3) Some of the blades are not sharp as I would expect, beings it's a new kit. Sent this one back, the replacement set came brand new, sealed in plastic/cardboard... without the #2 holder with blade even in it. Other extra blades were not in place, bounced around. Sent back again. I cannot recommend this product due to such poor quality control.