Buna N Spider Insert, Size - Jaw Couplings L190, Material - Spiders Buna N, Rated Torque 1,726 in-lb, 5,000 RPM Max. RPM, 2.70 HP Rating @ 100 RPM, Temp. Range -40 Degrees to 212 Degrees F, Max. Bore (In.) 2.125, Black Color, Length (In.) 4.47 in, Width (In.) 4.47 in, Height (In.) 0.88 in