18 different sizes.
dimensions of 3mm x 1mm (body) at 22mm x 2mm (body). specifications: color: black size: 205*103*10 material: rubber package included: 20 pc -3x1mm 20 pc -4x1mm rubber construction resists oil, gas, water and alcohol solvents. use for personal and professional workshops, garages, and sanitation services. 225pcs black nbr o ring oring assortment washer package seal o-ring kit with plastic case the buy the buy characteristics: perfect to use to prevent leaks while working with sanitary, hydraulic, air and gas connections.