Are you search of professional and convenient screw and nut kits? Our products can be your wonderful choice. Adopting premium materials for good durability and practicality, proper for many areas like PCB and flight controller stack building, can better satisfy your requirements. Features -Color:Black -Material:Nylon -Size:17.30X9.50X2.00cm/6.80X3.73X0.79in -Adopting premium nylon material, these head screws and nuts are , can withstand long servicing . -Well-designed, with good stability and fastening, can much to your work. -The assortment come with nylon spacers, screws, nuts and stand-off, satisfy your demands very perfectly. -Applied for PCB and flight controller stack building, motion sensor mounting, board building, of multiple uses. -Strong and sturdy threaded design of the nylon spacer, very easy to use with peace of mind, not easy to skid. Package list: 15 x spacers(6mm+6mm) 15 x spacers(10mm+6mm) 15 x spacers(15mm+6mm) 15 x spacers(20mm+6mm) 15 x spacers(6mm) 15 x spacers(10mm) 15 x spacers(15mm) 15 x spacers(20mm) 60 x nylon nuts 20 x nylon washers 20 x screws(6mm) 20 x screws(12mm) 20 x screws(20mm)