Round Float Ball, 4 in dia., Polyethylene/ OVERALL LENGTH: 6.000 INCHES NOMINAL OVERALL DIAMETER: 4.00 INCHES MINIMUM AND 6.50 INCHES MAXIMUM CONNECTION TYPE: UNTHREADED SPECIAL FEATURES: FOR USE IN TOILET TANK; 0.250-20 THREADS; 125.0 POUNDS PER SQUARE INCH OPERATING PRESSURE; OEM IS UNKNOWN MATERIAL: PLASTIC SHAPE: OVAL