Drinking fountain parts Push Button Assembly, Fits Brand Elkay & Halsey Taylor, For Use With Various Elkay and Halsey Taylor Water Coolers - Drinking Fountains, For Use With Mfr. Model Number HRF, WM, S300, S500, S1000, FD, OVL, HOF, HAC, HTV, HVR, VRC, EFA, EFHA, EMABF, EHFSA, EFW, LMABF, LFAE, EZ, LZ, HEW Product materials: Brass,Valox, Rubber, Celcon, Steel Wt: 3.5 oz.