Lengths: 21mm, 25mm, 28mm, 31mm packed: 6pcs/box Size: 8,10,15,20,25,30,35,40,45,50,55,60,70,80 Assorted: 15-40, 45-80 1, Plastic handle with different colors. 2, Extremely strong, flexible and durable. 3, Silicon stops 4, Sterilizable Max: 150°CPacking picture: Stainless steel K file (hand)