2 set 38mm Plastic Dual Flush Toilet Tank Push Button Closestool Replacement with rods Compatiable with most toilets with a 48-55mm dia hole in the cistern lid Supplied with plastic threaded rods that can easily be cut down to size Made of high quality plastic, very durable Key board diameter: Approx. 1.89inch/4.8cm; Mounting thread diameter: Approx. 1.50inch/3.8cm Rods thread diameter: Approx. 0.28inch/0.7cm; Rods length: Approx. 4.53inch/11.5cm