Urethane Spider Insert, Size - Jaw Couplings L050, Material - Spiders Urethane, Rated Torque 39 in.-lb., 18,000 Max. RPM, 0.06 HP Rating @ 100 RPM, Temp. Range -30 Degrees to 160 Degrees F, Max. Bore (In.) 0.625, Blue Color, Length (In.) 1.06, Width (In.) 1.06, Height (In.) 0.42