This 10 piece set includes 5 round ergonomic wooden handles with 0.16" opening and 5 handles with 0.2" opening, suitable for various cutting tool crafts. Constructed from durable wood with strong metal collars, these handles ensure a comfortable grip for better control. The smaller handles are approximately 3.7" long, and the larger ones are about 4.27" long, perfect for files ranging from 4" to 7".