Description: ►Standard Utilization: These round ended feather keys are mainly utilized to fasten the equipment and disassemble frequently, ideal accessories to improve efficiency ►High Utility: This key way set of round ended feather keys has been experienced accurate process, so they have smooth surface without blur. Also, they are rust-proof, wear-resistant and have high expanding ability. There are 140pcs in total, and they are enough for your multiple choices ►Comprehensive Size, This set combines many types of size: 3mm,4mm,5mm,6mm, and also this set can satisfy your different needs ►Handy Carry and Storage: This plastic box lets it easy to recognize and store your parallel keys, and you can classify these feather keys in organized, it is quite convenient for you to take out, carry and store ►High Quality and Good Effects: This woodruff key assortment set of round ended feather key is made of high quality stainless steel, so they are rust-proof, wear-resistant, accurate, and smooth. Package Included: 10PCS 3x3x8mm, 10PCS 3x3x10mm, 10PCS 3x3x12mm 10PCS 3x3x16mm, 10PCS 4x4x10mm, 10PCS 4x4x12mm 10PCS 4x4x16mm, 10PCS 4x4x20mm, 10PCS 5x5x12mm 10PCS5x5x16mm, 10PCS 5x5x20mm, 10PCS 5x5x25mm 5PCS 6x6x16mm, 5PCS 6x6x20mm, 5PCS 6x6x25mm 5PCS 6x6x30mm